r.bilinear r.bilinear - Bilinear interpolation utility for raster map layers. Raster (r.*) ParameterRaster|input|Input raster layer|False ParameterNumber|north|Specific input value to be assigned to the north and/or south poles for longitude-latitude grids|None|None|0 ParameterNumber|east|Specific input value to be assigned to the north and/or south poles for longitude-latitude grids|None|None|0 OutputRaster|output|Output raster layer