atan2 {terra}

R Documentation

Two argument arc-tangent

Description

For SpatRasters x and y, atan2(y, x) returns the angle in radians for the tangent y/x, handling the case when x is zero. See Trig

See Math-methods for other trigonometric and mathematical functions that can be used with SpatRasters.

Usage

## S4 method for signature 'SpatRaster,SpatRaster'
atan2(y, x)

## S4 method for signature 'SpatRaster,SpatRaster'
atan_2(y, x, filename, ...)

Arguments

y	SpatRaster
x	SpatRaster
filename	character. Output filename
...	additional arguments for writing files as in writeRaster

See Also

Math-methods

Examples

r1 <- rast(nrows=10, ncols=10)
r2 <- rast(nrows=10, ncols=10)
values(r1) <- (runif(ncell(r1))-0.5) * 10
values(r2) <- (runif(ncell(r1))-0.5) * 10
atan2(r1, r2)

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