# Slope function

Slope represents the rate of change of elevation for each DEM cell. It's the first derivative of a DEM.

The inputs for this function are the following:

- Input DEM
- Z Factor

The z-factor adjusts the units of measure for the z (elevation) units when they are different from the x,y (horizontal) units. If the x,y units and z units are in the same units of measure, the z-factor is 1. You can apply a z-factor of 0.3048 when the x,y units are in meters and the z unit is measured in feet to convert the elevation values from feet to meters.

By default, the slope appears as a grayscale image. You can add the Colormap function to specify a particular color scheme, or allow the person viewing the mosaic to modify the symbology with their own color scheme.

## Related Topics

8/21/2013