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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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