Use this module to generate naturally looking synthetical elevation models (DEM).
# D=2.0005 g.region -dp r.surf.fractal out=dem_d2_0005 dim=2.0005 r.info -r dem_d2_0005 r.mapcalc "dem_d2_0005_final = 1.0 * dem_d2_0005 + abs(min(dem_d2_0005))" r.colors dem_d2_0005_final color=terrain r.slope.aspect dem_d2_0005_final aspect=dem_d2_0005_final_as # D=2.90 r.surf.fractal out=dem_d2_90 dim=2.90 r.info -r dem_d2_90 r.mapcalc "dem_d2_90_final = 1.0 * dem_d2_90 + abs(min(dem_d2_90))" r.colors dem_d2_90_final color=terrain r.slope.aspect dem_d2_90_final aspect=dem_d2_90_final_as d.mon x0 d.erase -f d.split.frame d.frame -s uno d.rast dem_d2_0005_final d.frame -s dos d.rast dem_d2_0005_final_as d.frame -s tres d.rast dem_d2_90_final d.frame -s cuatro d.rast dem_d2_90_final_as
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