Creating a “ModArea”

Creating a “ModArea”
Ag Data Viewer User Manual
76
Nutrient Layers
Creating a “ModArea”
1. Turn on the map that is to be modified. (i.e. NH3
or Urea VR map.)
2. Click on “Create New Layer From Template”.
3. Select “ModArea” from the list
(You may have fewer options).
4. Now you should have a new shapefile called
“ModArea.shp” appear in your data tree. If you do
not, click the “Refresh” button.
5. Now click on the “ModArea.shp” to make it the Active Layer (Shown here in RED).
6. Now click on the “SHP” button on the bottom
toolbar to start drawing the modification area.
(Take note of the instructions at the top of the screen.)
7. Now draw your
modified area.
(Take note of the Length and Bearing to help with drawing.)
To the right is an example of a check strip “ModArea”.
8. Now, with “ModArea.shp” as the Active Layer,
click “Database” on the lower left hand corner
and click in the blue highlighted cell. Enter your
desired value and hit “enter” on your keyboard.
GK Technology, Inc. - 204 Fifth Street East, Halstad, MN - 218.456.2486 - www.geektechforag.com
Ag Data Viewer User Manual
77
Nutrient Layers
Creating a “ModArea”
9. Save your changes.
10.Open the database again to verify that
the number was saved.
11.Right click on “ModArea.shp” and select
“Create Grid From Polygons”.
12.Choose “NewVal” from the dropdown.
The number you entered in the database
should now appear under “First Row
Data”. Click “Create Grid”.
GK Technology, Inc. - 204 Fifth Street East, Halstad, MN - 218.456.2486 - www.geektechforag.com
Ag Data Viewer User Manual
78
Nutrient Layers
Creating a “ModArea”
13.A new file should appear in the data tree
called “ModArea_NewVal.grd”. You should
also see your shape filled in with a color in
the map window. (Mouse over it to verify it is
correct).
14.Click on the “Layer Info”
button on the side and verify that the surface you
want to modify and the
“ModArea_NewVal” are the
only 2 “Surfaces In Map”.
15.Click on “Multi Layer Map
Math” in the top toolbar.
16.A new window should appear. Load the “2
layer Merge” script. (Either click the “Open”
folder or it may be in the “Recent Scripts”
dropdown menu).
17.Scroll down to line 23 and select everything
to the right of the “=” sign. Now click the
drop down arrow under the “Data Raster
Layers” and select the “ModArea_NewVal”.
Click the “Add as Value” button.
Go to line 24 and do the same for the second
map (i.e. 46-0-0).
18.Click “Compile Script”. You should see the
green smiley face.
19.Click “Run Script”. The 2 files should now be
merged. Close the “Map Math” window.
GK Technology, Inc. - 204 Fifth Street East, Halstad, MN - 218.456.2486 - www.geektechforag.com
Ag Data Viewer User Manual
79
Nutrient Layers
Creating a “ModArea”
20.Click the “Layer Info” side button. Highlight
“Map Math Output” and click “Remove
Selected Layers” (the red circle). Click “Yes”
when prompted to save.
21.The “Map Math Output.grd” should now be in
the data tree. To cut off the excess areas,
make the field boundary the Active Layer and
select the field boundary.
22.Click on the “Crop Raster to Selected Polygon”.
23.To change the colors back, go to “Thematic
Color”.
24.Change “Number of
Ranges” to 5. “Range Type
to “K Means” and “Source
Color Table” to
Red_Yellow_Green and click
“Apply”.
25.“Save” and now the process
is complete.
GK Technology, Inc. - 204 Fifth Street East, Halstad, MN - 218.456.2486 - www.geektechforag.com
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