pad_edges: Extend edges of a matrix.
In geodiv: Methods for Calculating Gradient Surface Metrics

pad_edges

R Documentation

Extend edges of a matrix.

Description

Extends edge values of a raster or matrix by a specified number of pixels.

Usage

pad_edges(x, size, val = NULL)

Arguments

`x`	A matrix.
`size`	Numeric. Number of pixels to add to each side.
`val`	Numeric. If NULL (default), this extends the edge values out. If not null, this value will be used for the extended cells.

Value

A raster with edges padded size number of pixels on each edge.

Examples

# import raster image
data(normforest)
normforest <- terra::unwrap(normforest)

# crop raster to much smaller area
x <- pad_edges(as.matrix(normforest), 3, val = NA)

geodiv documentation built on Oct. 6, 2023, 1:07 a.m.