Peaks and Depressions Layer General Properties
To edit a peaks and depressions map, click once on map layer to select it. The properties for the peaks and depressions map are displayed in the Properties window. The peaks and depressions properties General page contains the following options:
Change peaks and depressions layer properties in the Properties window on the General page.
The Grid file displays the path and file name for the grid file used for the map. If the entire file name is not shown, place the mouse over the file name. A small window will appear with the full path and name displayed.
The button displays information about the grid file used to produce the map layer. The information includes the grid size, the minimum and maximum X, Y, Z values contained in the grid file, and statistics. If the grid file contains more than 40 million nodes, you are asked if you wish to create a detailed report or a quick report. Click Yes in the message to create a detailed grid report, or click No to create a shorter quick grid report.
Click the button to display the Open Grid dialog. This allows a new or updated grid file to be specified for the peaks and depressions map. Select the new grid file and click Open to reference the new file.
If the new grid exceeds the current map limits, a warning will appear asking you to adjust the map limits. If you click Yes, the limits are automatically adjusted to fit the new grid. If you click No, the limits are not automatically adjusted. The map may not be displayed. To change the map limits, click on the Map object in the Contents window and the Limits tab in the Properties window.
You may also see a warning message that the current map scale may result in an un-viewable map. Clicking OK allows the map scale to automatically be adjusted.
Coordinate System Note
Regardless of the file selected with either the File | Reload Map Data command or by clicking the button in the Properties window, the coordinate system for the original map layer is used after updating the file. If this is not the correct coordinate system, click on the map layer to select it. In the Properties window, click on the Coordinate System tab and set the coordinate system to the appropriate new system.
Click the button to display the Save Grid As dialog. This allows the grid file used for the peaks and depressions map to be saved to a new name. Set the File name, Save as type, and click Save to save the file. If a coordinate system has been defined on the Coordinate System tab in the Properties window, the Export Options dialog appears. Check the desired file formats. It is recommend that GS Reference (Version 2) file option be checked to generate a .GSR2 file. Click OK and the file is saved.
Display either All local highs/lows or the Maximum high/Minimum low.
Click Create Report to run a report of statistics of the peak and depression areas. Statistics are only included for peaks and or depressions displayed on the map. In the Peaks and Depressions Report Options dialog enter the appropriate number if the Z dimension is in different units than the X and Y dimensions. The default is 1. The statistics can be saved or printed when opened in the report window.