r.surf.idwSurface interpolation utility for raster layers.Raster (r.*)QgsProcessingParameterRasterLayer|input|Name of input raster layer|None|FalseQgsProcessingParameterNumber|npoints|Number of interpolation points|QgsProcessingParameterNumber.Integer|12|True|1|NoneQgsProcessingParameterBoolean|-e|Output is the interpolation error|FalseQgsProcessingParameterRasterDestination|output|Interpolated IDW