The Flow accumulation operation can be directly executed by typing the following expression on the command line of the Main window:
|
OUTMAP |
= |
MapFlowAccumulation(InputMapName) |
where:
|
OUTMAP |
is the name of the output raster map. |
|
MapFlowAccumulation |
is the command to start the Flow accumulation operation. |
|
InputMapName |
is the name of the input raster map; the input raster map is expected to be an output map of the Flow direction operation (i.e. a raster map with system domain FlowDirection). |
When the definition symbol = is used, a dependent output map is created; when the assignment symbol := is used, the dependency link is immediately broken after the output map has been calculated.
The output map will always use system domain Value. The operation sets the value range of the output map from 0 to 999999999, and sets the step size to 1.
See also: