783620H / 1013 11. UTILITIES
Clear All
This resets all the ROI bits in the spectrum, removing all ROI markings from the spectrum.
Save File...
This command allows you to save to disk a table of the channel numbers, for the current spectrum, that have the ROI bit set. The contents of the spectrum are not changed. A standard
Windows file-save dialog opens, allowing you to create a filename or overwrite an existing
.ROI
file.
Recall File...
Recall File... sets the ROIs in the spectrum according to the table in the disk file created by ROI/
Save File.... This command opens a standard file-open dialog, prompting you to select a filename. When you select a file, the ROIs in the currently displayed spectrum are set to conform to the table in the file. The previous ROIs are cleared. The spectrum data are not altered by this operation, only the ROI bits.
In
.ROI
files, the ROIs are saved by channel number. Therefore, if the spectrum peaks have shifted in position, the ROIs in the file will not correspond exactly to the spectrum data.
11.1.4. Right-Mouse-Button (Context) Menu Commands
Figure 321 shows the right-mouse-button menu that opens when you right-click in the Expanded Spectrum Window.
11.1.4.1. Show Residuals
Marking this menu item activates the Plot Absolute Residuals and Plot Relative Residuals modes. The Residuals section of the spectrum window (item 6 on page 425) displays a comparison of the counts in each channel (Actual) to the calculated counts for that channel as determined by the peak-fitting algorithm (Fitted).
Plot Absolute Residuals displays the difference in each channel, in counts, between Actual and Fitted counts. Plot Relative
Residuals displays the difference in each channel, in standard deviations (abbreviated STD on the screen), between Actual and
Fitted counts divided by the square root of the Actual counts; that is, .
Fig. 321. The Context
Menu.
The Properties command is equivalent to Options/Graph...; see Section 11.1.3.3.
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