Preprocessing requirements

Preprocessing requirements

All DEMs must meet the following conditions:

  • All tiles must be of the same data type

    Supported data types are:
    • 16S
    • 16U
    • 32R
    Note:

    For DEMs, 16S and 32R are best. Negative elevations can be achieved with 16U by specifying the Elevation Offset parameter and the Elevation Scale parameter to produce negative elevations.

    If using an integer data type, consider applying an elevation offset and scaling.

    All tiles must be in the same projection, have the same pixel resolution, and be aligned on the same grid.
Parent topic: Creating a DEM index file

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