r.contour
r.contour - Produces a vector map of specified contours from a raster map.
Raster (r.*)
ParameterRaster|input|Name of input raster map|False
ParameterString|levels|List of contour levels|
ParameterString|minlevel|Minimum contour level|
ParameterString|maxlevel|Maximum contour level|
ParameterString|step|Increment between contour levels|
ParameterString|cut|Minimum number of points for a contour line (0 -> no limit)|0
ParameterBoolean|-n|Suppress single crossing error messages|False
OutputVector|output|Name of output vector map