regress {terra}

Cell level regression

Description

Run a regression model for each cell of a SpatRaster. The independent variable can either be defined by a vector, or another SpatRaster to make it spatially variable.

Usage

## S4 method for signature 'SpatRaster,numeric'
regress(y, x, formula=y~x, na.rm=FALSE, cores=1, filename="", overwrite=FALSE, ...)

## S4 method for signature 'SpatRaster,SpatRaster'
regress(y, x, formula=y~x, na.rm=FALSE, cores=1, filename="", overwrite=FALSE, ...)  

Arguments

y

SpatRaster

x

SpatRaster or numeric (of the same length as nlyr(x)

formula

regression formula in the general form of y ~ x. You can add additional terms such as I(x^2)

na.rm

logical. Remove NA values?

cores

positive integer. If cores > 1, a 'parallel' package cluster with that many cores is created and used. You can also supply a cluster object.

filename

character. Output filename

overwrite

logical. If TRUE, filename is overwritten

...

list with named options for writing files as in writeRaster

Value

SpatRaster

Examples

s <- rast(system.file("ex/logo.tif", package="terra"))   
x <- regress(s, 1:nlyr(s))