DESCRIPTION

r.cell.area uses the current computational region to compute the area of each raster cell. It can do so on a projected coordinate system or on a geographic coordinate system; the latter is accomplished via the latitude of the cell's midpoint. This approximation can generate ~1% error with coarse lat/lon cells near the poles.

NOTES

Output units can be either square meters or square kilometers. This module is useful for determining the flow accumulation area to weight flow accumulation algorithms by rainfall and/or on lat/lon grids.

SEE ALSO

r.mapcalc

AUTHOR

Andrew D. Wickert

Last changed: $Date 2017-10-12$