Using ArcCatalog
™
GIS by ESRI
™
Copyright © 1999, 2001 ESRI
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The information contained in this document is subject to change without notice.
DATA CREDITS
Geographic data used in the Quick-start tutorial provided courtesy of Yellowstone National Park, National Park Service and is used herein with
permission.
Some of the illustrations in this work were made from data supplied by ArcUSA™; ArcWorld™; ArcScene™; ArcEurope™ and Data Solutions; the
United States Geological Survey; Space Imaging; the Texas Orthoimagery Program (TOP) and VARGIS; and Geographic Data Technology, Inc., of
Lebanon, New Hampshire, and are used herein with permission. Copyright © 2001 Geographic Data Technology, Inc. All rights reserved.
CONTRIBUTING AUTHOR
Aleta Vienneau, Jonathan Bailey
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2
Quick-start tutorial
IN THIS CHAPTER
• Exercise 1: Building a catalog
of geographic data
• Exercise 2: Exploring data and
adding it to a map
• Exercise 3: Managing
shapefiles
• Exercise 4: Managing coverages
ArcCatalog lets you explore and manage your data. After connecting to
your data, use the Catalog to explore its contents. When you find the data
you want to use, you can add it to a map. Often when you get data for a
project, you can’t use it right away; you may need to change its projection
or format, modify its attributes, or link geographic features to attributes
stored in another table. When the data is finally ready, you should document
its contents and the changes you have made. These data management
tasks can all be accomplished using tools that are available in the Catalog.
The easiest way to find out what you can do with ArcCatalog is to complete the exercises in this tutorial.
• Exercise 1 shows you how to build your own catalog of geographic data
by adding data to and removing data from the Catalog.
• Exercise 2 illustrates how to explore and search for data and how to add
it to a map.
• Exercises 3 and 4 show you how to define a data source’s coordinate
system, modify its contents, join attributes in another table to the
data, and symbolize features based on the joined attributes. Exercise 3 is
for ArcView® and ArcEditor™ users, while Exercise 4 is targeted
for ArcInfo users.
This tutorial is designed to let you work at your own pace. You’ll need
between two and four hours of focused time to complete the tutorial.
However, you can also perform the exercises one at a time if you wish.
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Exercise 1: Building a catalog of geographic data
When you build a catalog, you’re choosing the data you
want to work with. You might use several folders of data to
complete your project, while someone else might use data
stored in a geodatabase. For this tutorial, you’ll be working
with data from Yellowstone National Park, which is located
in the northwestern part of the United States.
What’s in the Catalog?
On the left of the ArcCatalog window, you see the Catalog
tree; it gives you a bird’s-eye view of how your data is
organized. On the right are tabs that let you explore the
contents of the selected item in the Catalog tree.
In this exercise, you’ll add the folder containing the tutorial
data to the Catalog. Because you modify this data in later
exercises, you’ll create a working copy of the folder and
then remove items that you don’t need from the Catalog.
Start ArcCatalog
Before you can complete the tasks in this tutorial, you must
start ArcCatalog.
1. Click the Start button on the Windows taskbar.
2. Point to Programs.
3. Point to ArcGIS.
4. Click ArcCatalog. The ArcCatalog window appears.
The first time you start ArcCatalog, it contains folder
connections that let you access your computer’s hard disks.
The Catalog also contains folders that let you create and
store connections to databases and Internet servers and
manage geocoding services and search results.
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When you select a connection, you can access the data to
which it’s linked. Folder connections let you access folders,
or directories, on local disks or shared folders on the
network. Database connections let you access the contents
of a database. When you remove folder or database connections from the Catalog, you are only removing the connection, not deleting the data.
2. Double-click a folder in the Contents list. That folder is
selected in the Catalog tree, and the Contents tab lists
the folders and geographic data it contains.
Together, your connections create a catalog of geographic
data sources. Individual folders and data sources are items
in that catalog. If you use ArcInfo Workstation, you’re
accustomed to using the term “item” when referring to a
coverage’s attributes; in this book, “item” refers only to an
element in the Catalog tree.
Before you can start exploring the data for this tutorial, you
must select the folder where the tutorial data is located. In
the Catalog, you can quickly select any folder on your
computer or on the network as long as you know its path.
Look in a folder connection
When you select a folder connection in the Catalog tree, the
Contents tab lists the items it contains. Unlike Windows
Explorer, the Catalog doesn’t list all files stored on disk; a
folder might appear empty even though it contains several
files. Folders containing geographic data sources have a
different icon to make your data easier to find.
Using this method, you can browse through the contents of
disks looking for geographic data.
Locate the tutorial folder
1. Click in the Location text box.
2. Type the path to the ArcGIS\ArcTutor folder on the
local drive where you installed the tutorial data; for
example, type “C:\ArcGIS\ArcTutor”.
If the data was installed by your system administrator in
a shared folder on the network, the path to the tutorial
folder includes the names of the computer and the share
through which the folder is accessed; for example,
“\\dataserver\public\ArcGIS\ArcTutor”.
Look in a folder connection in your catalog.
1. Click a folder connection in the Catalog tree. The items
it contains appear in the Contents tab. Here, the work
folder doesn’t contain geographic data; it has a plain
folder icon. The icon used by the Workspace folder
shows that it contains geographic data.
3. Press Enter. The folder is selected in the Catalog tree.
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When the Catalog already contains a folder connection that
can access the ArcGIS\ArcTutor folder, that connection
expands and the tutorial folder is selected in the Catalog
tree. Otherwise, a new folder connection is added to the
Catalog that directly accesses the ArcGIS\ArcTutor folder.
The path you typed above is added to the Location list after
you press the Enter key. To access the ArcGIS\ArcTutor
folder again in the future, you can choose its path from the
list by clicking the Location dropdown arrow.
Create a working copy of the tutorial data
In Exercises 2, 3, and 4, you will create new items and
modify the data provided for this tutorial. When processing
data, it is best to work on a copy so that your original data
will remain unmodified. To prepare for those exercises, use
ArcCatalog to copy the ArcGIS\ArcTutor\Catalog folder to
a location where you have write access. You will need
15 MB of free disk space to store the tutorial data.
1. If the Catalog doesn’t have a connection to the place
where you want to store the tutorial data, type its name
into the Location combo box and press Enter; for
example, type “C:\”. A new folder connection will be
added to the Catalog. Substitute the name of your folder
connection for “C:\” in the following steps.
2. Click the ArcGIS\ArcTutor folder or folder connection
in the Catalog tree.
3. Click the Catalog folder in the Contents tab.
4. Click the Copy button.
5. Click the C:\ folder connection in the Catalog tree.
6. Click the Paste button. A new folder called Catalog will
appear in the Contents list for the C:\ folder connection.
7. Click the new Catalog folder in the Contents tab.
8. Click the File menu and click Rename.
9. Type “Cat_Tutorial” and press Enter.
If you type another name for the folder, that name must
have 13 characters or less and cannot use spaces.
Because the tutorial data includes coverages, the
folder’s name must satisfy these requirements for
ArcInfo workspaces. For the rest of the tutorial, substitute the name of your folder for “C:\Cat_Tutorial”.
Now that you have a working copy of the tutorial data, you
can connect directly to it in the Catalog.
Connect directly to your copy of the tutorial data
Folder connections in the Catalog can access specific
folders on disk. You might establish several connections to
different folders on the same disk. You don’t have to see all
the data on your C:\ drive, for example, just because you
want to use data in two of the folders it contains.
To create a connection that directly accesses a folder, you
can use a shortcut provided by the Catalog.
Copy Paste
1. Click the Cat_Tutorial folder in the Contents list.
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2. Scroll to the top of the Catalog tree.
3. Drag the Cat_Tutorial folder from the Contents tab and
drop it on the Catalog at the top of the Catalog tree.
Disconnect From Folder
3. Repeat steps 1 and 2, removing each folder connection
in turn, except for the C:\Cat_Tutorial folder connection.
4. Click the Tools menu and click Options.
5. Click the General tab.
A new folder connection is added to the Catalog.
6. In the top level entries list, uncheck Database Connections, Internet Servers, and Geocoding Services. Coordinate Systems is unchecked by default.
Creating folder connections using this shortcut is handy
when you’re browsing through local disks that contain many
folders, some of which contain geographic data.
Remove folders that you don’t need
For the remaining tasks in this tutorial, you only need to use
the folder connection that accesses your working copy of
the tutorial data. You can remove all other folder connections from the Catalog. To hide folders such as Database
Connections, you must change the settings in the Catalog’s
Options dialog box.
1. Click the C:\ folder connection.
2. Click the Disconnect From Folder button. The connection is removed from the Catalog.
7. Click OK.
Only the C:\Cat_Tutorial folder connection and the Search
Results folder remain in the Catalog. Now you can explore
the tutorial data without seeing folders and data that aren’t
essential to the task at hand.
You can continue on to Exercise 2 or stop and complete the
tutorial at a later time. If you do not move on to Exercise 2
now, do not delete your working copy of the tutorial data
and do not remove the folder connection that accesses the
working copy of the tutorial data from the Catalog.
QUICK-START TUTORIAL
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Exercise 2: Exploring data and adding it to a map
Each of the Catalog’s three tabs provides a different way to
explore the contents of the selected item in the Catalog
tree. Within each tab there are different views that let you
change the appearance of the selected item’s contents.
properties of each item in columns; you can sort the list by
the property values. Thumbnails view displays a snapshot
for each item in the list, providing a quick illustration of
the item’s geographic data.
The Contents tab lists the items contained by the selected
item in the Catalog tree, for example, the items in a folder.
When a data source such as a shapefile is selected, the
Preview tab lets you see the geographic or attribute data it
contains. The Metadata tab lets you see documentation
describing the item’s contents.
Items such as maps, shapefiles, and tables don’t contain
other items. When you select them in the tree, the Contents
tab lists the item’s properties and its thumbnail.
ArcCatalog and ArcMap work together to make it easy to
build maps. For your project you are mapping the forest
resources in the southeastern corner of Yellowstone National Park. In the Yellowstone folder is a map of the study
area; it is incomplete. In this exercise, after exploring the
data in the folder, you’ll add more data to the map.
The Contents tab
When you select items such as folders or geodatabases in
the Catalog tree, the Contents tab lists the items they
contain. To change the appearance of the Contents list, use
the appropriate buttons on the Standard toolbar.
Large Icons
Thumbnails
Explore the contents of the Yellowstone folder
Each type of geographic data has its own set of icons in the
Catalog. The Yellowstone folder contains a personal
geodatabase, coverages, shapefiles, raster datasets, a TIN
dataset, a dBASE® table, and an ArcMap map document.
Geodatabases let you store spatial data inside a relational
database; personal geodatabases can be accessed by only
one person at a time. For more information, see Chapter 3,
‘Catalog basics’.
The Yellowstone folder also contains two layers. A layer
includes a shortcut to geographic data and information such
as the symbology used to draw geographic data on a map,
the query used to select which features the layer represents,
and properties defining how those features are labeled.
Use the Contents tab to find out about the data in the
Yellowstone folder.
1. Double-click the C:\Cat_Tutorial folder connection in
the Catalog tree.
List
Details
Large Icons view represents each item in the list with a
large icon. List view uses small icons. Details view shows
2. Click the Yellowstone folder in the Catalog tree.
3. Click the Large Icons button.
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Items that contain other items, such as geodatabases
and coverages, always appear at the top of the Contents
list. They are grouped by type.
8. Click the Thumbnails button and scroll down through the
snapshots. Items that are not geographic data sources,
such as the yellowstone geodatabase, can’t have
thumbnails; their icons appear on a gray background.
4. Click the List button.
5. Click the Details button. The Type column in Details
view will help you learn which icon represents which
type of data. You can find more information about data
types and their icons in Chapter 4, ‘What’s in the
Catalog’.
9. Click the Details button.
10. Double-click the yellowstone personal geodatabase in
the Contents tab. It contains a feature dataset called
water and a feature class called roads.
6. Click the heading of the Type column to sort the items
by type.
7. Click the heading of the Name column to sort the items
by name.
11. Double-click the water feature dataset in the Contents
tab. It contains three feature classes called lakes, rivers,
and streams, respectively.
12. Click the states coverage in the Catalog tree to list the
feature classes it contains.
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13. Click the tin_study TIN dataset in the Catalog tree. This
surface represents the terrain of the study area. Because
a TIN dataset doesn’t contain other items, the Contents
tab lists its properties and thumbnail instead.
Geography view draws each feature in a vector dataset,
each cell in a raster dataset, and each triangle in a TIN
dataset. When drawing geographic data, the Catalog uses a
default set of symbology. When drawing a layer’s contents,
the Catalog uses the symbology stored in the layer. You can
explore the selected item’s geographic data using the
buttons on the Geography toolbar.
Table view draws all rows and columns and the value for
each cell in the selected item’s table. You can explore the
values in the table using the scroll bars, the buttons at the
bottom of the table, and the context menus that are available from the column headings.
Look at the Yellowstone data in Geography view
Thumbnails give you a quick look at an item’s geographic
data; they’re useful when browsing through folders.
However, you must often see the data in more detail to
determine whether or not you want to use it.
Use Geography view to look at the data contained by the
items in the Yellowstone folder. When using Geography
view, the Geography toolbar is enabled. You can use the
Zoom In, Zoom Out, Pan, Full Extent, and Identify buttons
on the toolbar to explore geographic data.
Zoom In
Pan
Identify
The Preview tab
The Preview tab lets you explore the selected item’s data in
either Geography or Table view. For items containing both
geographic data and tabular attributes, you can toggle
between the Geography and Table views using the
dropdown list at the bottom of the Preview tab.
Zoom Out
Full Extent
While you look at the Yellowstone data, you may wish to
see the geographic features in more detail using these tools.
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For more information about how these buttons work, see
Chapter 7, ‘Exploring an item’s geography’.
1. Click the dem30 raster dataset in the Catalog tree. This
dataset contains elevation information for the study area
within the park.
2. Click the Preview tab. The raster draws using the
default grayscale color ramp.
3. Click the elevation layer in the Catalog tree. The raster
draws using the symbology stored in the layer—a green
to red color ramp.
7. Click the Preview dropdown arrow at the bottom of the
Preview tab and click Table.
8. In the Catalog tree, click each feature class in the
vegetation coverage in turn and look at their contents in
Table view.
4. Click the study_area shapefile in the Catalog tree. It
represents the study area for this project, which lies in
the southeastern corner of the park.
5. In the Catalog tree, click the plus sign next to the
vegetation coverage. The coverage’s feature classes are
listed in the Catalog tree.
All feature classes in a coverage have FID and Shape
columns. They may also have several pseudo items
whose names begin with a dollar sign ($), which are
maintained by ArcInfo. Because topology only exists
for the polygon feature class, it’s the only one that has a
feature attribute table and therefore additional attributes.
9. Click the Preview dropdown arrow at the bottom of the
Preview tab and click Geography.
10. In the Catalog tree, click the plus sign next to the water
feature dataset in the yellowstone geodatabase. The
feature classes it contains appear in the Catalog tree.
6. In the Catalog tree, click each feature class in the
vegetation coverage in turn and look at their contents in
Geography view. This polygon coverage represents the
different types of vegetation within the study area.
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11. In the Catalog tree, click each feature class in the water
feature dataset in turn and look at their contents in
Geography view. The feature dataset groups feature
classes that contain different types of water features
throughout the park: lakes, rivers, and streams.
12. Click the lakes feature class in the Catalog tree.
13. Click the Identify button on the Geography toolbar and
click one of the larger lakes in the Preview tab. Its
attributes appear in the Identify Results window. Only
the larger lakes in this feature class have names.
By exploring a data source’s data in Geography view, you
can find out if it has the features you need and if those
features have the correct attributes. This information can
help you decide whether or not to add the data to a map.
Explore the contents of a table
All features within three pixels of where you clicked are
selected; each feature is listed on the left of the Identify
Results window. If a data source has no text attributes,
a numeric attribute will be used to identify the features.
14. Click the Close button to close the Identify Results
window.
15. Click the hydrology layer in the Catalog tree. This group
layer presents all features in the lakes, rivers, and
streams feature classes using symbology stored in the
layer. When added to a map, a group layer only has one
entry in the table of contents.
With the table exploration tools available in the Catalog, you
can learn a great deal about a table’s contents. You can
search for values in the table and sort records according to
the values in one or more columns.
The vegetation coverage represents areas with distinct
types of vegetation. The vegtype table contains both
general information, such as whether or not the area is
forested, and detailed information such as which plant
species live in each area. Throughout the park, 67 vegetation groups have been defined. Some areas, such as open
water or rocky peaks, may not have any vegetation at all.
Use the tools available in Table view to explore the contents of the vegtype table.
1. Click the vegtype dBASE table in the Catalog tree.
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2. Explore the table’s values using the buttons at the
bottom of the table. Once you click in the table you can
also use the arrow keys on the keyboard.
Beginning of table
Previous record
Current record
Next record
Number of
records in
the table
7. Position the mouse pointer over the right edge of the
Primary column’s heading. The mouse pointer changes.
8. Click and drag the edge of the Primary column’s
heading to the left. The red line indicates the edge’s
original position, while the black line shows its new
location. Drop the edge of the column. The column is
narrower.
End of table
3. Type “10” into the Current record text box and press
Enter. The Current record icon appears next to the tenth
row in the table. The Object ID value for this record,
which is located in the OID column, is nine; the OID
values begin at zero.
4. Scroll horizontally through the table until you see the
column named “Primary”.
5. Right-click the heading of the Primary column and click
Freeze/Unfreeze Column. The Primary column is frozen
in position at the left of the table, and a heavy black line
appears to its right.
9. Right-click the heading of the Type column and click
Freeze/Unfreeze Column. The heavy black line is now
to the right of the Type column. Scroll horizontally
through the table. Both the Primary and Type columns
stay in place while the other columns scroll normally.
10. Click the Type column’s heading. The column is highlighted in light blue.
11. Click and drag the Type column’s heading to the left of
the Primary column. The red line indicates the Type
column’s new position. Drop the column in the new
location.
6. Scroll horizontally through the table. The Primary
column stays in place while the other columns scroll
normally. Place the Type column to the right of the
Primary column.
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The Type column now appears to the left of the Primary
column, and the heavy black line appears to the right of
the Primary column.
12. Hold down the Ctrl key and click the Primary column’s
heading. Both columns are now selected.
13. Right-click the heading of the Primary column and click
Sort Descending.
The rows in the table are sorted alphabetically in
descending order, first by the values in the Type column, then by the values in the Primary column. In this
format, the table presents vegetation information from
general to detailed as you look at the columns from left
to right.
The Metadata tab
The Metadata tab shows descriptive information about the
selected item in the Catalog tree. Metadata includes
properties and documentation. Properties are derived from
the data source, while documentation is information
provided by a person.
Metadata is stored as extensible markup language (XML)
data in a file with the data or in a geodatabase. The Catalog
uses an extensible stylesheet language (XSL) stylesheet to
transform the XML data into a hypertext markup language
(HTML) page. You can change the metadata’s appearance
by changing the current stylesheet using the dropdown list
on the Metadata toolbar.
You can browse through the available metadata just as you
would browse through any Web page in a browser.
Explore metadata for the tutorial data
After exploring the contents of the vegtype table, you have
a better idea about the forest resources that are available in
the study area. However, you may not know what some
column names in the table mean. For that information, you
must look at the table’s metadata.
The metadata for the Yellowstone folder provides an
overview of the data it contains. By looking at metadata for
the study_area shapefile and vegetation coverage, you can
find out when and why the data was created and look at the
data’s properties.
1. Click the Yellowstone folder in the Catalog tree.
2. Click the Metadata tab. A metadata HTML page describing the contents of the Yellowstone folder appears.
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3. Click the study_area shapefile in the Catalog tree.
Metadata is presented with the ESRI stylesheet by
default.
5. Click the Stylesheet dropdown arrow on the Metadata
toolbar and click ESRI.
6. Click the Spatial tab in the metadata.
7. Underneath the name of the coordinate system used by
the data, click Details. The coordinate system’s properties appear. Click Details again to hide the information.
8. Scroll down to see the shapefile’s extent. Its bounding
coordinates are presented both in the actual coordinates
of the data and in decimal degrees.
The Catalog automatically adds the item’s current
property values to the metadata when you view it in the
Metadata tab.
4. Click the Stylesheet dropdown arrow on the Metadata
toolbar and click FGDC. Click the Stylesheet dropdown
arrow again and click FGDC FAQ. Different stylesheets
present the same body of metadata in different ways.
9. Click the boundary shapefile in the Catalog tree.
10. Click the Spatial tab in the metadata. No coordinate
system information is available because the shapefile’s
projection hasn’t yet been defined. Scroll down to see
the data’s extent in projected coordinates.
Because there is no coordinate system information, the
Catalog cannot calculate the extent in decimal degrees.
If you have ArcView or ArcEditor, you’ll define the
shapefile’s coordinate system in Exercise 3.
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By default, when you look at metadata in the Metadata
tab, the Catalog automatically creates metadata if it
doesn’t already exist. On creation, it adds the current
property values along with hints about the type of
documentation you should provide. These hints appear
as gray text when using the ESRI stylesheet.
15. Click the Contents tab in the ArcCatalog window.
While metadata isn’t required to meet any standard, the
metadata created by the Catalog will follow the Federal
Geographic Data Committee (FGDC) Content Standard
for Digital Geospatial Metadata. If all the suggested
documentation is completed, your metadata will meet
the FGDC standard’s minimum requirements.
The Yellowstone folder contains a map document. The map
already has data from the roads feature class and the
hillshade raster dataset. You must still add the water
features in the park to the map.
11. Click the vegetation coverage in the Catalog tree.
Now that you’ve familiarized yourself with the data, you
can create a map describing the study area within
Yellowstone National Park.
Add a layer to a map
Adding data to a map is easy—all you have to do is drag
data from the Catalog and drop it on the map. When you
drop a layer onto a map, a copy of the layer is created and
stored inside the map document. In this way, you can create
a layer once and use it in many different maps. Before you
can add more data to the yellowstone map, you must open
the map document in ArcMap.
12. Click the Spatial tab in the coverage’s metadata. Like
the boundary shapefile, this coverage’s projection
hasn’t been defined, and the data’s extent in decimal
degrees hasn’t been calculated. If you have ArcInfo,
you’ll define its coordinate system in Exercise 4.
1. Click the Yellowstone folder in the Catalog tree.
13. Click the Attributes tab in the metadata. Attributes are
listed for each coverage feature class that has them.
2. Double-click the yellowstone map document in the
Catalog; it opens in ArcMap.
14. Scroll down to and click the CODE attribute. You can
see a description of its data type and values.
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Water features must be added to the map; they should
draw underneath the park roads layer but above the
hillshade layer. The map’s table of contents reflects the
order in which layers are drawn.
4. Click and drag the hydrology layer from the Catalog
and drop it in the map’s table of contents below park
roads in the Study Area data frame’s list of layers.
In the ArcMap window, you see the contents of the
Study Area data frame in Data view; the name of the
active data frame appears in bold in the table of contents. The map has two other data frames as well:
Yellowstone National Park and United States.
3. Arrange the ArcMap and ArcCatalog windows so you
can see the table of contents in ArcMap and the Catalog
tree at the same time.
5. In the ArcMap window, click the Save button.
The water features draw underneath the road features and
above the hillshade image in the map.
Create layers
The features in the park roads and hydrology layers cover
the entire park, but you only want to map the study area.
The mask shapefile represents the area outside the study
area. You can create a layer from this shapefile in the
Catalog and add it to the map to hide features that extend
beyond the study area.
If you add data directly to a map rather than creating a
layer first, ArcMap creates a new layer in the map document. After modifying the layer’s symbology and other
properties, you can save it as a layer file outside the map
document so you can reuse it in other maps.
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In this task, you will first save the park roads layer to a file,
then create a new layer representing the mask shapefile.
1. Right-click the park roads layer in the map’s table of
contents and click Save As Layer File.
6. Navigate to the Yellowstone folder in the Save Layer As
dialog box. Type a name for the new layer, for example,
“feature mask”, then click Save. The layer appears in
the Contents list for the Yellowstone folder.
2. In the Save Layer dialog box, navigate to the
Yellowstone folder. Type a name for the new layer, for
example, “park roads”, then click Save.
7. Right-click the feature mask layer and click Properties.
The Layer Properties dialog box appears.
8. Click the Symbology tab.
3. In the Catalog tree, click the Yellowstone folder.
4. Click the View menu and click Refresh. The park roads
layer now appears in the Contents list.
9. Click the button showing the current symbol for the
layer. A symbol is assigned at random when the layer is
created.
5. Right-click the mask shapefile and click Create Layer.
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9
Now that you’ve finished creating the feature mask layer,
you should document its contents. Before adding it to the
map, you can import metadata, which has already been
created for the layer.
Import metadata
There is a text file in the Yellowstone folder containing
metadata describing the feature mask layer. By importing
this metadata it will become part of the layer itself; it will
be copied and moved with the data and updated automatically by ArcCatalog. This is useful because when metadata
is maintained separately, it is easy to let it get outdated.
10. Click the dropdown arrow next to the Fill Color symbol
and click white.
11. Click the dropdown arrow next to the Outline Color
symbol and click black.
1. Click the feature mask layer in the Catalog tree.
2. Click the Metadata tab. By default, ArcCatalog automatically creates metadata for the feature mask layer.
Information such as the name of the layer file will be
included automatically along with documentation hints.
3. Click the Import metadata button on the Metadata
toolbar.
12. Click OK in the Symbol Selector dialog box and click
OK in the Layer Properties dialog box.
Import metadata
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4. Click the Format dropdown list and click FGDC
CSDGM (TXT). The metadata in the text file is structured following the format, which is supported by the
FGDC’s metadata parser, mp.
5. Click Browse and navigate to the Yellowstone folder.
6. Click the Files of type dropdown arrow and click All
files (*.*). Click the file “feature_mask.met” and click
Open.
Now there is just one thing missing from the layer’s
metadata—a thumbnail describing how the layer will
appear when added to a map. Creating thumbnails for
data sources and layers is a manual process.
8. Click the Contents tab. Instead of a thumbnail, the
layer’s icon appears on a gray background.
9. Click the Preview tab.
10. Click the Create Thumbnail button on the Geography
toolbar.
Create Thumbnail
11. Click the Contents tab. You can see the thumbnail both
here and in the layer’s metadata.
7. Click OK in the Import Metadata dialog box.
The documentation in the feature_mask.met file has
been added to the layer’s metadata, replacing the
Catalog’s documentation hints.
After adding or removing features from a data source or
changing a layer’s symbology, you may wish to update the
item’s thumbnail.
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Search for items
4. Click the Condition dropdown arrow and click equals.
You’ve explored the contents of the Yellowstone folder and
created the new feature mask layer, and soon you’ll add it
to your map. However, often you know what data you need
to use but not where it’s located. The Catalog lets you
search for data by its name, type, and geographic location.
You can also search for data using dates and keywords that
reside in the data’s metadata. When metadata exists, its
name, type, and geographic location are derived from the
metadata as well.
5. Click in the Value text box and type “boundary”.
6. Click Add to List.
Suppose you didn’t know the feature mask layer existed.
You need to add a data source to the yellowstone map that
shows the boundary of the study area within the park.
1. Right-click the Yellowstone folder in the Catalog tree
and click Search. The Search dialog box appears, and
the location in which the search will begin looking is
automatically set to the Yellowstone folder.
With this search, ArcCatalog will look in the Yellowstone
folder for items whose metadata includes the theme
keyword “boundary”.
7. Click Find Now.
The search is saved in the Search Results folder and is
selected in the Catalog tree. As the items are found that
satisfy the search criteria, shortcuts to those items are
added to the search’s list of results. When a Search is
complete, the message “Catalog search finished”
appears in the status bar of the ArcCatalog window and
the Stop button becomes unavailable in the Search
dialog box.
2. Click the Advanced tab.
8. Click the Close button in the upper-right corner of the
Search dialog box.
3. Click the Metadata element dropdown arrow, scroll
down, and click Theme Keyword in the list.
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The Catalog has found four items in the Yellowstone
folder that satisfy the search criteria: three shapefiles
and the feature mask layer. Shortcuts to these items
appear in the Contents tab. In the Catalog, you can
work with shortcuts the same way you would work with
the items themselves.
9. Click the shortcut to the feature mask layer in the
Contents tab.
10. Click the Preview tab to draw the layer.
11. Click the Metadata tab to see the layer’s metadata.
This is the data you want to add to your map.
12. Click and drag the shortcut to the feature mask layer
from the Catalog and drop it in the map’s table of
contents above park roads in the Study Area data
frame’s list of layers. Now you only see features inside
the study area on the map.
13. Click the Save button.
The yellowstone map now contains all the basic data
needed to represent the study area. Now all you need to do
is add a few finishing touches to the map’s layout.
Complete the map
The purpose of the yellowstone map is to illustrate the
different types of vegetation within the study area. Currently, the Study Area data frame shows most of the park.
You need to zoom in on the study area; do this in layout
view to make sure you’re zoomed in as far as possible but
still able to see the entire study area in the layout. When
you switch to layout view, you’ll see the Yellowstone
National Park and United States data frames as well.
1. Click the View menu and click Layout view. You can
see all the data frames and the map’s title and scale bar
in the layout.
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In the Yellowstone National Park data frame, there is an
orange rectangle representing the area that you can see
within the Study Area data frame. Similarly, in the
United States data frame there is a green rectangle
representing the area that you can see within the
Yellowstone National Park data frame.
When you zoom farther in to the features in the Study
Area data frame, the extent rectangle on the
Yellowstone National Park data frame decreases in size
and the scale bar increases in size.
2. In ArcMap, click the Zoom In button on the Tools
toolbar and draw a rectangle around the study area in
the Study Area data frame.
Zoom In
Go Back To Previous Extent
If you zoom in too close, you can return to your previous
extent by clicking the Go Back To Previous Extent
button.
3. When the study area fills the Study Area data frame,
click the Save button.
4. Click the File menu and click Exit to stop ArcMap.
5. In ArcCatalog, click the Contents tab and click the
Yellowstone folder in the Catalog tree.
In this exercise, you saw how to explore your data in the
Catalog, create layers, import metadata, search for items,
and add them to maps. In the next exercise, you’ll create a
layer illustrating the different types of vegetation that can
be found within the study area. This requires changing a
data source to a different format and modifying its values.
If ArcView or ArcEditor is installed on your computer, you
should continue on to Exercise 3; you’ll define a
shapefile’s coordinate system, modify its contents, and then
use it to create the vegetation type layer. If ArcInfo is
installed on your computer, you should continue with
Exercise 4; you’ll define a coverage’s coordinate system,
modify its contents, and then use it to create the vegetation
type layer. The title bar of the ArcCatalog window shows
you which version of the ArcGIS™ software you have
installed on your computer.
You can continue on to the next exercise or stop and
complete the tutorial at a later time. If you do not move on
to the next exercise now, do not delete your working copy
of the tutorial data. Also, do not remove the folder connection that accesses the working copy of the tutorial data
from the Catalog.
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Exercise 3: Managing shapefiles
Assembling data for a project often requires significant data
management work. In this exercise, ArcView and ArcEditor
users will create a layer representing the different types of
vegetation in the study area and add it to the yellowstone
map. In doing so, you’ll learn how to define a shapefile’s
coordinate system, modify attributes, join a table’s attributes
to a shapefile, and update their metadata using tools that are
available in the Catalog. If ArcInfo is installed on your
computer, skip to Exercise 4.
Define a shapefile’s coordinate system
In the previous exercise, when you looked at metadata for
the boundary shapefile you found that its coordinate system
was not defined. The features in the shapefile are projected,
but the Catalog doesn’t know which map projection was
used. Without that information, the Catalog can’t determine
where on the earth’s surface the features are located.
4
4. Click the ellipses (...) button to the right of the Spatial
Reference property.
All data sources in the Yellowstone folder except for
the states coverage use the same projection. You can
copy coordinate system information from any data
source in the folder except states to this shapefile.
5. Click Import in the Spatial Reference Properties dialog
box.
A shapefile’s Properties dialog box lets you modify its
attributes, create spatial and attribute indexes, and define its
projection.
1. In the Contents list, right-click the boundary shapefile
and click Properties.
2. Click the Fields tab.
3. Under Field Name, click Shape. This column contains
the feature geometry. The shapefile’s spatial properties
appear in the Field Properties list below.
At the bottom of the list is the Spatial Reference
property. The shapefile’s coordinate system is unknown.
6. Navigate to the Yellowstone folder, click the dem30
raster dataset, then click Add. The projection parameters from the dem30 raster dataset appear in the Spatial
Reference Properties dialog box.
7. Click OK. The shapefile’s coordinate system appears in
the Shape column’s Spatial Reference property.
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8. Click OK.
A shapefile’s coordinate system information is stored in
a .prj file with the data—for example, boundary.prj.
Now you can update the shapefile’s metadata with the
new coordinate system information. By default, every
time you look at metadata in the Metadata tab, the
Catalog automatically updates the metadata with the
data source’s current properties.
9. Click the Metadata tab.
10. Click the Spatial tab in the metadata.
columns to see if modifications are required before they can
be joined together.
Using Table view, you can see that the vegtype dBASE
table has two columns that contain no values and that the
attribute named “CODE” in the vegetation coverage’s
polygon feature class and the column named “VEGID” in
the vegtype table contain the same values. Use the
coverage’s metadata to see the data type of the CODE
attribute, then use the table’s Properties dialog box to
modify its columns appropriately.
1. Click the vegetation coverage in the Catalog tree.
2. Click the Attributes tab in the metadata.
3. Scroll down to and click the CODE attribute. Its data
type is Float.
4. Click the Contents tab in the ArcCatalog window.
5. Right-click the vegtype table in the Catalog tree and
click Properties.
6. Click the Fields tab. The table’s columns and their data
types are listed. You can see that the VEGID column’s
data type is Long Integer.
The Catalog has updated the coordinate system in the
metadata and has calculated its extent in decimal degrees.
Modify attributes in dBASE tables
A layer can join or relate attributes in a table of any format
to its geographic data source as long as they share a column
of values. The only requirement is that the columns have
the same data type. You must look at the vegetation
coverage’s attributes and the vegtype dBASE table’s
The values in the VEGID column in the dBASE table
are integers, while the CODE column in the coverage
contains floating point values. To join the table to the
coverage, the values in both columns must have the
same data type. Therefore, you must add a floating
point column to the table.
7. Scroll to the bottom of the list of column names. Click in
the empty row under the name of the last attribute and
type “VEGTYPE”.
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8. Click under Data Type to the right of the new column’s
name, click the dropdown arrow that appears, then click
Float.
12. Press Delete. The column is removed from the list.
9. In the Field Properties list below, click to the right of
Precision, click again, then replace the zero with “4”.
14. Click OK.
10. Click to the right of Scale and replace the zero with
“1”.
13. Repeat steps 11 and 12 for the LATIN3 column to
delete it from the table.
Now that the vegetation shapefile has a new integer
attribute, you must copy the values in the original VEGID
attribute to the new VEGTYPE attribute. To edit the values
in a table, you must use ArcMap.
Calculate attribute values in ArcMap
To edit a table’s values you must add the table to a map.
With the Editor toolbar visible and the table opened, you
can start editing its values. Use the field calculator to copy
values from the CODE attribute to the VALUE attribute.
1. Click the Launch ArcMap button in ArcCatalog.
The new attribute has been defined. Now you can
remove the empty columns from the table.
11. Point at the gray button to the left of the NAME3
column; the mouse pointer changes to an arrow. Click to
select the column.
Launch ArcMap
2. Click OK to start using ArcMap with a new, empty
map.
3. Drag the vegtype table from the Catalog and drop it
onto the table of contents or the canvas in the ArcMap
window.
4. Click the Source tab in the map’s table of contents. The
table’s data is available within the map.
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5. Click the Editor Toolbar button; the Editor toolbar
appears.
Editor Toolbar
6. On the Editor toolbar, click the Editor menu and click
Start Editing.
12. Scroll down and double-click VEGID in the Fields list.
“[VEGID]” appears in the text box below “VEGTYPE
=”. ArcMap reads this as VEGTYPE=[VEGID]; all
values in the VEGTYPE column will be set equal to the
values stored in the VEGID column.
7. Right-click the vegtype table and click Open. The
table’s values appear in a table window. The headings
of the columns whose values you can change have a
white background.
8. Right-click the heading of the VEGID column and click
Freeze/Unfreeze Column. It is now positioned at the left
of the table with a heavy black line to its right.
9. Scroll horizontally in the table until you see the
VEGTYPE column.
10. Right-click the heading of the VEGTYPE column and
click Freeze/Unfreeze Column. It is now positioned to
the right of the VEGID column at the left of the table
with the heavy black line to its right.
11. Right-click the heading of the VEGTYPE column and
click Calculate Values.
13. Click OK.
As ArcMap calculates the new values in each record,
you can see how many records have been completed at
the bottom of the Field Calculation dialog box.
14. Look at the VEGTYPE column in the table; its contents
are the same as the VEGID column.
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15. Click the Close button in the top-right corner of the table
window.
6. Right-click the vegetation type layer and click Properties.
16. Click the Editor menu on the Editor toolbar and click
Stop Editing. Click Yes to save your changes.
7. Click the Joins & Relates tab in the Layer Properties
dialog box.
17. Click the File menu and click Exit to stop ArcMap.
Click No when prompted to save the map.
8. Click the Add button next to the Joins list.
Now that the vegetation coverage and the vegtype table
have matching columns, you can create a layer that links
the two together.
Create a layer using the related attributes
Through a layer you can join the attributes stored in the
vegtype table to the vegetation coverage and use the table’s
values to query, label, and symbolize the coverage’s
features.
1. Click the Yellowstone folder in the Catalog tree.
9. Click the first dropdown arrow to specify what you
want to join to this layer, then click Join attributes from
a table.
10. Under step 1, click the dropdown arrow and click the
CODE attribute.
11. Under step 2, click the Browse button.
12. Navigate to the Yellowstone folder, click the vegtype
table, and click Add.
13. Under step 3, click the dropdown arrow and click the
VEGTYPE column.
2. Click the File menu, point to New, then click Layer.
3. Type a name for the layer such as “vegetation type”.
9
4. Click the Browse button, navigate to the Yellowstone
folder, click the vegetation coverage, then click Add.
5. Check Store relative path name, then click OK. Relative
path names let you continue using the layer even after
moving or renaming the Yellowstone folder.
14. Click OK in the Join Data dialog box. The vegtype table
is added to the list of tables that have been joined to the
coverage.
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To change the color of individual values, for example, to
make the water polygons blue, double-click the patch of
color to the left of the value. Set the fill and outline
colors in the Symbol Selector dialog box and click OK.
20. Click OK in the Layer Properties dialog box.
The vegetation type layer represents the forest resources in
the study area.
Add the vegetation type layer to the map
Now that the vegetation layer has been created, you can
add it to the yellowstone map.
15. Click the Symbology tab.
1. Double-click the yellowstone map in the Catalog.
16. Click Categories in the Show list.
2. Click and drag the vegetation type layer from the
Catalog and drop it in the map’s table of contents below
park roads and above hydrology in the Study Area data
frame’s list of layers.
17. Click the Value Field dropdown arrow and click
vegtype.TYPE.
18. Click the Color Scheme dropdown arrow and click a
different color palette, if desired.
19. Click Add All Values.
A message appears indicating that the vegetation type
layer is missing spatial reference information. ArcInfo
users define the vegetation coverage’s coordinate
system in Exercise 4.
3. Click OK to add the vegetation type layer to the map.
Because the vegetation coverage’s features share the
same projection as the other data sources in the Study
Area data frame, the vegetation features draw on the
map in the proper location even though their coordinate
system hasn’t yet been defined.
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4. Click the Save button in ArcMap.
5. Click the File menu and click Exit to stop ArcMap.
The yellowstone map is now complete.
You’re now finished with the Quick-start tutorial. This
exercise showed how to use ArcCatalog to manage your
shapefiles and dBASE tables. You saw how to define a
shapefile’s coordinate system, add and remove attributes,
calculate attribute values, and symbolize features using
attributes stored in another table.
Overall, this tutorial has introduced you to a wide range of
tasks. Whether you are looking for data, building maps, or
managing data for your project or an entire organization,
the Catalog plays a pivotal role in getting the job done. The
remaining chapters in this book look in detail at the variety
of tasks you can accomplish with the Catalog.
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Exercise 4: Managing coverages
Assembling data for a project often requires significant data
management work. In this exercise, ArcInfo users will
create a layer representing the different types of vegetation
in the study area and add it to the yellowstone map. In
doing so, you’ll learn how to define a coverage’s coordinate system, add and delete attributes, update metadata, and
link a coverage and an associated INFO table using tools
that are available in the Catalog.
3. Click the Projection tab and click Define.
In addition to ArcInfo Desktop, you must have ArcInfo
Workstation or a geoprocessing server installed on your
computer to be able to complete this exercise. ArcView and
ArcEditor users must follow Exercise 3 instead.
Set a coverage’s coordinate system
In Exercise 2, when you looked at metadata for the vegetation coverage you found that its coordinate system was not
defined. The features in the coverage are projected, but the
Catalog doesn’t know which map projection was used.
Without that information, the Catalog can’t determine
where on the earth’s surface the features are located.
4. Click Define a coordinate system for my data to match
existing data and click Next.
5. Click the Browse button to the right of the Dataset text
box.
6. Navigate to the Yellowstone folder, click the dem30
raster dataset, then click Open.
In addition to creating topology and setting tics, extents,
and tolerances for a coverage, you can define its coordinate
system using the Coverage Properties dialog box. You can
copy coordinate system information to and from coverages,
grid-based raster datasets, and TIN datasets. The dem30
and the tin_study data sources in the Yellowstone folder
use the same projection as the vegetation coverage.
1. Click the Yellowstone folder in the Catalog tree.
2. In the Contents list, right-click the vegetation coverage
and click Properties.
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The projection parameters used by the raster dataset
appear in the Coordinate system parameters list.
7. Click Next and click Finish.
8. The name of the projection and the spheroid or ellipsoid it uses appears in the Properties dialog box. To list
the projection’s parameters, check Show spatial reference details. Click Display PRJ file to see the parameters in ArcInfo Workstation format.
9. Click OK.
Now that the coverage’s projection has been defined, you
won’t have any trouble adding its data to any map, regardless of the map’s projection.
5. Click OK. A dialog box appears showing the progress of
the conversion tool. When the tool has finished running,
the dialog box disappears and the new veg_info INFO
table appears in the Yellowstone folder.
Convert your data to a different format
ArcToolbox provides many different tools for converting
your data. The most common data conversion tools have
been included in the Catalog. If the conversion tool you
need isn’t listed, start ArcToolbox and look in the Conversion Tools toolset.
1. In the Contents list, right-click the vegtype dBASE
table.
2. Point to Export and click dBASE to INFO. The vegtype
table is automatically listed as the Input dBASE table.
3. Click the Browse button to the right of the Output
INFO table text box.
4. Navigate to the Yellowstone folder. Type a name for the
new table—for example, “veg_info”—into the Name
text box and click Save.
Now you must look at the vegetation coverage’s attributes
and the veg_info table’s columns to see if other modifications are required before they can be linked together.
Modify attributes in coverages and INFO tables
The relationship between the vegetation coverage and the
veg_info table is established by creating a coverage relationship class. A relationship class is similar to an ArcInfo
relate, but it lets you define the relationship more accurately. Once created, a relationship class lets you query,
label, and symbolize features in the coverage using attributes in the associated table.
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When creating the relationship class, you define which
column in the feature class’s attribute table and which
column in the INFO table share the same values. The
columns must also share the same data type.
Using Table view, you could see that the vegetation
coverage’s polygon feature class has a column named
“CODE”, and the veg_info table has a column named
“VEGID” that contains the same values. Use the Properties
dialog box for the feature class and table to see if the
columns have the same data type.
and LATIN3 columns don’t contain any values and can
be deleted.
4. Scroll down to and click the NAME3 attribute, then
click Delete. Click the LATIN3 attribute and click
Delete. The columns are removed from the list.
1. Right-click the veg_info INFO table in the Catalog and
click Properties.
2. Click the Items tab. The columns in the table and their
data types are listed. The VEGID column has a data
type of Binary and an input width of four.
Because this column will be used to join the table’s
values to the coverage, it should be indexed.
3. Click the VEGID attribute and click Add Index. The
value in the Indexed column in the Properties dialog
box changes from No to Yes.
5. Click OK.
6. Click the vegetation coverage in the Catalog tree.
7. Right-click the polygon feature class in the Contents list
and click Properties. The Properties dialog box for a
coverage feature class is the same as for INFO tables.
8. Click the Items tab. The attributes in the feature class
and their data types are listed. The CODE attribute has
a data type of Float.
The values in the VEGID column in the INFO table are
binary integers, while the CODE column in the polygon
feature class contains floating point values. To create a
relationship class the values in both columns must have
the same data type. Therefore, you must add a Binary
column to the polygon feature class.
If you looked at the contents of the original vegtype or
the new veg_info table, you would see that the NAME3
9. Click Add.
10. Click next to Item name and type “VEGTYPE”.
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11. Click next to Type, click the dropdown arrow that
appears, then click Binary. The Input width defaults to
four, and the Display width defaults to five.
Calculate attribute values in ArcMap
You must add a coverage feature to a map in order to edit
its attributes. With the Editor toolbar visible, you can start
editing the coverage. Open the feature class’s attribute
table and then use the field calculator to copy values from
the CODE attribute to the VEGTYPE attribute.
1. Click the Launch ArcMap button in ArcCatalog.
Launch ArcMap
12. Click OK. The new attribute appears in the list of
attributes for the feature class.
2. Click OK to start using ArcMap with a new, empty
map.
3. Drag the vegetation coverage from the Catalog and drop
it onto the table of contents or the canvas in the ArcMap
window. A layer is created for the coverage’s polygon
feature class and added to the map’s table of contents.
4. Click the Editor Toolbar button; the Editor toolbar
appears.
Editor Toolbar
13. Click OK.
Now that the vegetation coverage has a new integer
attribute, you must copy the values in the original “CODE”
attribute to the new “VEGTYPE” attribute. To edit the
features and attributes in a coverage, you must use
ArcMap.
5. On the Editor toolbar, click the Editor menu and click
Start Editing.
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6. Right-click the vegetation polygon layer in the table of
contents and click Open Attribute Table. The attributes
of the polygon feature class appear in a table window.
The headings of the columns whose values you can
change have a white background.
7. Scroll horizontally in the table until you see the
VEGTYPE column.
8. Right-click the heading of the VEGTYPE column and
click Calculate Values.
As ArcMap calculates the new values in each record,
you can see how many records have been completed at
the bottom of the Field Calculator dialog box.
10. Look at the VEGTYPE column in the attribute table; its
contents are the same as the CODE column.
11. Click the Close button in the top-right corner of the
attribute table window.
12. On the Editor toolbar, click the Editor menu and click
Stop Editing. Click Yes to save your changes.
9. Double-click CODE in the Fields list. “[CODE]”
appears in the text box below “VEGTYPE =”. ArcMap
reads this as VEGTYPE=[CODE]; in other words, all
values in the VEGTYPE column will be set equal to the
values stored in the CODE column. Click OK.
13. Click the File menu and click Exit to stop ArcMap.
Click No when prompted to save the map.
Now that the vegetation coverage and the veg_info table
have matching columns, you can create a relationship class
that links the two together.
Create a relationship class
When creating a relationship class, you must define the
properties of the relationship between the coverage and the
associated INFO table. One property of a relationship is its
cardinality, which describes how many features in the
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coverage are related to how many records in the attribute
table. The cardinality for this relationship is many-to-one;
that is, a group of plants defined in the veg_info table may
be found in many polygons in the coverage.
Because you’re primarily interested in the vegetation
coverage’s features, the polygon feature class is the origin
in the relationship. The veg_info table is the destination.
The columns that link the two are called key attributes. The
VEGTYPE attribute in the coverage is the primary key;
the VEGID column in the veg_info table is the foreign key.
Path labels describe the relationship when navigated
forward and backward. In this relationship, going forward
from the origin to the destination, the vegetation polygons
relate to “types of vegetation” in the veg_info table. Going
backward from the destination to the origin, the veg_info
table relates to “vegetation features” in the coverage.
Now, create a relationship class linking the vegetation
coverage’s polygon feature class to the veg_info table.
6. Click Next.
7. Click Simple (peer-to-peer) relationship and click Next.
8. In the first text box, type “types of vegetation”. In the
second text box, type “vegetation features”. Click Next.
1. Click the Yellowstone folder in the Catalog tree.
2. Click the File menu, point to New, then click Coverage
Relationship Class.
3. Type a name for the relationship class, for example,
“vegetation_attributes”.
4. In the Origin table/feature class list, click the plus sign
next to vegetation and click its polygon feature class.
5. In the Destination table/feature class list, click
veg_info.
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As discussed at the beginning of this task, there is a
many-to-one relationship between the polygons in the
vegetation coverage and the vegetation types in the
veg_info table. In practice, a many-to-one relationship
is the same as a one-to-one relationship. Therefore, you
will create a relationship with one-to-one cardinality.
9. Click 1-1 (one-to-one) and click Next.
10. Click the dropdown arrow for the primary key field list
and click the VEGTYPE attribute.
11. Click the dropdown arrow for the foreign key field list
and click VEGID.
You can find out which relationships a coverage feature
class or INFO table participates in by opening its Properties
dialog box and clicking the Relationships tab. Now you can
create a layer that takes advantage of this relationship.
Create a layer using the related attributes
Once a relationship class has been created, a layer can use
the attributes in the veg_info table to query, label, and
symbolize the vegetation coverage’s features.
1. Click the Yellowstone folder in the Catalog tree.
2. Click the File menu, point to New, then click Layer.
3. Type a name for the layer such as “vegetation type”.
4. Click the Browse button, navigate to the Yellowstone
folder, click the vegetation coverage, then click Add.
5. Check Store relative path name, then click OK. Relative
pathnames let you continue using the layer even after
moving or renaming the Yellowstone folder.
12. Click Next and click Finish. The vegetation_attributes
coverage relationship class appears in the Yellowstone
folder.
6. Right-click the vegetation type layer and click Properties.
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7. Click the Joins & Relates tab in the Layer Properties
dialog box.
11. Click the Symbology tab.
8. Click the Add button next to the Joins list.
13. Click the Value field dropdown arrow and click
veg_info:TYPE.
9. Click the first dropdown arrow to specify what you
want to join to this layer, then click Join data based on a
predefined relationship class.
12. Click Categories in the Show list.
14. Click the Color Scheme dropdown arrow and click a
different color palette, if desired.
15. Click Add All Values.
10. Click OK in the Join Data dialog box. The veg_info
table is added to the list of tables that have been joined
to the coverage.
To change the color of individual values—for example,
to make the water polygons blue—double-click the
patch of color to the left of the value. Set the fill and
outline colors in the Symbol Selector dialog box and
click OK.
16. Click OK in the Layer Properties dialog box.
The vegetation type layer joins attributes in the veg_info
table to the polygons in the vegetation coverage using
information from the vegetation_attributes relationship
class. Then, it symbolizes them using the table’s values. It
represents the forest resources, which are available
throughout the study area.
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Add the vegetation type layer to the map
Update the coverage’s metadata
Now that the vegetation layer has been created, you can
add it to the yellowstone map.
Over the course of this exercise, you defined the vegetation
coverage’s coordinate system, added a new attribute, and
created a relationship class linking the coverage to the
veg_info table. Now you should update the vegetation
coverage’s metadata with this information.
1. Double-click the yellowstone map in the Catalog.
2. Click and drag the vegetation type layer from the
Catalog and drop it in the map’s table of contents below
park roads and above hydrology in the Study Area data
frame’s list of layers.
1. Click the vegetation coverage in the Catalog tree.
2. Click the Metadata tab. The Catalog has automatically
added the coverage’s coordinate system to the metadata
and has calculated its extent in decimal degrees.
3. Click the Attributes tab in the metadata.
4. Click the VEGTYPE attribute. The Catalog has added
this attribute and its data type information to the list.
5. Scroll down to see information about the relationship
class in which the coverage participates. Relationship
class information isn’t included in the FGDC standard;
ESRI has defined a profile of that standard that includes
additional data properties.
To add descriptive information, for example, to document the data contained in the VEGTYPE column, use
the Catalog’s FGDC metadata editor.
6. Click the Edit Metadata button on the Metadata toolbar.
3. Click the Save button in ArcMap.
4. Click the File menu and click Exit to stop ArcMap.
The yellowstone map is now complete.
Edit Metadata
7. Click Entity Attribute at the top of the metadata editor.
The editor is currently showing you metadata for the
polygon feature class.
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8. Within the Detailed Description tab, click the Attribute
tab.
12. Click Save.
13. Click the Attributes tab in the metadata.
14. Click the VEGTYPE attribute. The description has been
added to the metadata.
The Attribute tab currently shows metadata for the first
attribute in the polygon feature class, the FID attribute.
The Definition text box shows that this column contains
a unique value for each feature in the coverage.
9. In the toolbar at the bottom of the Attribute tab, click the
Move next button. The current attribute displayed in the
Attribute tab advances to the next one listed in the
coverage’s metadata—the SHAPE attribute, which
contains feature geometry.
Move next Move last
10. Click the Move last button to see the VEGTYPE
attribute.
11. Click in the Definition text box and type, “A number
identifying the type of vegetation in each feature. Use
this attribute to join this coverage to the veg_info table.”
Anyone who uses this coverage in the future will be able to
find out what its properties are, what data it contains, and to
which tables it is related.
This exercise showed how you can use ArcCatalog to
manage your data. You saw how to define a coverage’s
coordinate system, add and remove attributes, calculate
attribute values, symbolize features using attributes in a
related table, and use the FGDC metadata editor to document your data.
Overall, this tutorial has introduced you to a wide range of
tasks. Whether you are looking for data, building maps, or
managing data for your project or an entire organization,
the Catalog plays a pivotal role in getting the job done. The
remaining chapters in this book look in detail at the variety
of tasks you can accomplish with the Catalog.
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