terra: atan2 – R documentation

Become an expert in R — Interactive courses, Cheat Sheets, certificates and more!

atan2

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)

Arguments

`y`	SpatRaster
`x`	SpatRaster

Examples

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

terra

Spatial Data Analysis

v1.2-10

GPL (>= 3)

Authors

Robert J. Hijmans [cre, aut] (<https://orcid.org/0000-0001-5872-2872>), Roger Bivand [ctb] (<https://orcid.org/0000-0003-2392-6140>), Karl Forner [ctb], Jeroen Ooms [ctb] (<https://orcid.org/0000-0002-4035-0289>), Edzer Pebesma [ctb] (<https://orcid.org/0000-0001-8049-7069>)

Initial release

2021-05-12