atan2: Two argument arc-tangent
In miraisolutions/raster: Geographic Data Analysis and Modeling

For Raster* objects 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 Raster* objects.

1	atan2(y, x)

`y`	Raster* object
`x`	Raster* object

r1 <- r2 <- raster(nrow=10, ncol=10)
r1[] <- (runif(ncell(r1))-0.5) * 10
r2[] <- (runif(ncell(r1))-0.5) * 10
atan2(r1, r2)

miraisolutions/raster documentation built on May 30, 2019, 11:41 p.m.

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