ASC

Esri ASCII grid import options

Import a DTM saved in the ASCII Esri grid data exchange format. For general information about the format, visit the Esri grid wikipedia page.

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Location

File -> Import -> Esri Grid ASCII (.asc)

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Properties

Scale

• Horizontal: scaling coefficient applied to the raster cells

• Vertical: scaling coefficient applied to the raster values

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Process

1. file is completely read into an internal data structure, and kept in memory for the duration of the process

2. 3D points are generated from raster data and cell size value

3. faces are calculated between points

4. DTM mesh is created

5. DTM properties are set according to the file parameters