Compute Root Mean Square Error

Compute Root Mean Square (RMS) Error adds a layer to an existing gridded surface, by calculating the RMS error between each source point and a local plane extracted from the surface. This function computes the root mean square error between each source point and a local plane extracted from the surface. This produces information similar to the standard deviation layer, but where standard deviation measures the source point distribution relative to a flat horizontal plane, the RMS error measures thickness relative and orthogonal to an inclined plane. This is useful for evaluating point distribution without the influence of slopes.

Related commands:

• Compute Slope and Aspect

• Compute Layer

• Remove Layer

Procedure

1. Select a surface in the Layers window.

This will enable the Compute Root Mean Square Error command.

2. Select the Compute Root Mean Square Error command.

The status of the process is reported in the Output window.

3. Select the RMS Error layer in the Layers window to display the data in the new layer.