DEMGenerator

From Fmepedia

DEMGenerator is a Workbench Transformer.

Generates a Digital Elevation Model (DEM) from the input POINTS, BREAKLINES, and 3D_LINES. Raster features should go into the POINTS input.

The underlying surface is built using the surface tolerance as specified by the tolerance parameter. This should be set to the larger of the accuracy of the elevation data being input and the accuracy of the output elevation that is required. A higher surface tolerance results in a lower accuracy.

The interpolation method parameter defines how the z elevation for each point is determined. If CONSTANT is specified, then the z elevation of each coordinate is set to be the elevation of the closest model point. If PLANAR is set, then interpolation is used to determine the elevation.

The X spacing and Y spacing directives are used to specify the sampling interval for the generated points. These spacings are measured in the ground units of the input data.

The Elevation Attribute specified will be added to the output point features and will hold their z value.