Conversion from elevation to slope values/directions in float/grid format
- Start up Global Mapper and load up a surface elevation dataset.
- Select File | Export Raster and Elevation Data | Export Float/Grid File.
The Float/Grid Export Options dialog box appears.
- Optional: type in the desired sample spacing values and units.
- Toggle on Export Slope Values instead of Elevations to export slope values.
Or toggle on Export Slope Direction Values Instead of Elevations to export slope directions.
- Click OK.
The Save As dialog box appears.
- Type in the output file name e.g. slope.flt. Click Save.
The elevation data is exported out as slope values or slope directions into the output file. - Close Global Mapper.
Conversion from float/grid format to ESRI ASCII ArcGrid
- Start up a Global Mapper and load the slope values/directions float/grid file generated in the previous section.
- Select File | Export Raster and Elevation Data | Export Arc ASCII Grid.
The Arc ASCII Grid Export Options dialog box appears.
-
Optional: type in the sample spacing values and choose a vertical unit. Click OK.
The Save As dialog box appears. - Type in the output file name, e.g. slope.asc. Click Save.
The slope values/directions ESRI ASCII ArcGrid file is created
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