Elevation Map Options

Select elevation display options with 

• Modify, Elevation, Colors menu choice that appears when an elevation map window is active. 
• Right click on the map and pick Elevation colors, colors from the popup menu. 

In addition to the form below, you can:

• Expand the z range to use all the available colors on the map window, which can be valuable when you have blown up the map and no longer have the highest or lowest locations on the map.  This will only work if you have subset the DEM, and will put the elevation limits for coloring based on the highest and lowest elevations on the map.
• To arbitrarily set the color limits, right click on the elevation map, pick "Elevation colors, Specify", and then select what you want for the limits to use in coloring.  These limits will then apply if you switch to a reflectance map.
• Set the color range, useful if you want to match several maps.

Pick Display color scheme. The preview menu shows what the map will look like. Chroma depth colors: the blue to red progression that provides an illusion of depth when used with the appropriate glasses. Terrain color scale: a color scale that looks good with terrain and does not use blue. Gray scale: a black to white progression. Alternate bands: contours displayed in alternating color bands. Color bands IHS colors. You can change and preview the color scheme. For an elevation map the intensity will be from the elevations, the saturation can be from the light reflectance model, and hue will be a constants than you can adjust. Land sea scales: Spectrum colors Rainbow Fixed color palette from table.  This used pre-defined categories, usually good for only one thing. Stretched color palette  Defined palette Contrast: Coloring of grids by integer code The next two options have been in the program a long time, and I have not recently used them.  Their usefulness depends a lot on DEM encoding, and were designed when integer DEMs were the norm.  You might now get better results with a vector overlay.  Ocean check: put all points at or below sea level in the water color. Lake check:  put lakes in the water color. Set IHS colors. Set color for missing data. z Range: set the values to use for color coding. Log 10 Grayscale (monochrome): pick the color, with an option to invert.

Last revision 8/12/2021