[GRASS-user] Problem- " Flood zone analysis", "de-correlation stretching", "Bitmap" in windows

GRASS GRASS user
1

Dear All,

How I can solve the problem like-

  1. Flood Zone Analysis( Hydrographical properties of an Flood Zone, given the DEM parameters).
  2. De-correlation stretching.
    3 Bitmap( Given raster map, set non nul value for the user specified area( given small sample vector or small sample raster)).

Thanks & Regards,

Swapan Ghosh