Focal Operations

The focal module contains functions for performing focal and convolution operations on rasters.

Operations

focal(raster, focal_type, width_or_radius[, ...])	Applies a focal filter to raster bands individually.
correlate(raster, kernel[, mode, cval])	Cross-correlate kernel with each band individually.
convolve(raster, kernel[, mode, cval])	Convolve kernel with each band individually.

Utilities

check_kernel(kernel)	Validate and return the focal kernel.
get_focal_window(width_or_radius[, height])	Get a rectangle, circle, or annulus focal window.