DEM Survey Propertiesdialog has three primary functions:
- Load topographic surveys into your
- Associate various surfaces and datasets with those surveys (e.g. inputs into an FIS)
- Produces various elevation uncertainty models (error surfaces) of your survey
These three functions are organized onto three different tabs of the
DEM Survey Properties dialog (
DEM Survey tab,
Associated Surfaces tab, and the
Error Calculations tab):
Associated surfaces are rasters that represent additional information about your survey. They are used in the calculation of error rasters. Common associated surfaces are slope, surface roughness, or point density. Each associated surface is represented as a single raster dataset.
Creating a project and loading a DEM are covered in the video below.
Note, if your rasters do not meet the GCD's dimensional divisibility and orthognality criteria, your raster will be corrected for divisibility and orthogonality while loading your DEM to a GCD project or through the Clean Raster Tool.