Contour interpolation

Dialog box

Contour interpolation is an operation which first rasterizes contour lines of a segment map with a value domain, and then calculates values for pixels that are not covered by segments by means of a linear interpolation. Furthermore, on the command line, this operation can also use an input raster map.

When using Contour interpolation on a segment map containing height (contour) information, the resulting raster map is a Digital Elevation Model (DEM).

Dialog box options:

Contour map:	Select an input segment map with a value domain.
Output raster map:	Type a name for the output raster map.
Georeference:	Select a georeference for the output raster map or create a new georeference by clicking the little create button .
Domain:	Accept the default domain, or select an another existing value domain, or create a new value domain.
Value range:	Accept the default value range, or specify your own range of possible values in the output map.
Precision:	Accept the default precision for the output values, or specify your own precision.
Description:	Optionally, type a description for the output map. The description will appear in the status bar of the Main window when moving the mouse pointer over the map in a Catalog, and in the title bar of a map window when the output map is displayed. If no description is supplied, the output map will use its own definition as description.

When you click the Show button, the dependent output map will be defined, calculated and shown. When you click the Define button, the dependent output map will only be defined; if necessary the map will be calculated later, for instance when the map is opened to be displayed.