**Calculate Slope**

This is invoked from the "Calculate" menu of a map window with a DEM associated.

**Slope:**calculates average slope between two selected points picked on the map. It figures this average slope by the total change in elevation between the two points and the distance between them. It does not account for intervening rises and drops; thus you should select two end points of a relatively uniform slope. You select the two points graphically on the map.**Excessive slopes**: finds and labels all slopes greater than a specified value with a large point symbol. This is useful for finding errors and blunders in a DEM, and will show every such point. A terrain category might miss some points if the DEM must be subsampled to display, and individual points may be hard to locate.**Point slope (algorithms)**: calculates the slope at a point with all the supported slope algorithms. Since the slope algorithm does not generally make much difference, you should be sure you want to perform this analysis.**Steepest slope**: finds the steepest slope on the map. This is likely to be the result of one or more bad elevation values in the DEM, and provides a good assessment of DEM quality.- Directional: shows the elevations of the point and its eight neighbors, and the slope in each of the eight directions.

*Last revision 1/16/2013*