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The direction (azimuth) to or from the nearest cell that is not NA. The direction is expressed in radians, unless you use argument degrees=TRUE.
# S4 method for SpatRaster
direction(x, from=FALSE, degrees=FALSE, filename="", ...)SpatRaster
SpatRaster
Character. Output filename (optional)
Logical. If FALSE (the default) the unit of direction is radians.
Logical. Default is FALSE. If TRUE, the direction from (instead of to) the nearest cell that is not NA is returned
Additional arguments as for writeRaster
r <- rast(ncol=36,nrow=18, crs="+proj=merc")
values(r) <- NA
r[306] <- 1
b <- direction(r, degrees=TRUE)
plot(b)
crs(r) <- "+proj=longlat"
b <- direction(r)
plot(b)
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