R: Two argument arc-tangent

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)

### Arguments

`y` | SpatRaster
`x` | SpatRaster

### See Also

`Math-methods`

### 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)

[Package terra version 1.2-5 Index]