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Replace NA
or other values in SpatRaster x
with the values of SpatRaster y
For polygons: areas of x
that overlap with y
are replaced by y
or, if identity=TRUE
intersected with y
.
# S4 method for SpatRaster,SpatRaster
cover(x, y, values=NA, filename="", ...)# S4 method for SpatVector,SpatVector
cover(x, y, identity=FALSE, expand=TRUE)
SpatRaster
SpatRaster or SpatVector
Same as x
numeric. The cell values in x
to be replaced by the values in y
character. Output filename
additional arguments for writing files as in writeRaster
logical. If TRUE
overlapping areas are intersected rather than replaced
logical. Should parts of y
that are outside of x
be included?
r1 <- r2 <- rast(ncols=36, nrows=18)
values(r1) <- 1:ncell(r1)
values(r2) <- runif(ncell(r2))
r2 <- classify(r2, cbind(-Inf, 0.5, NA))
r3 <- cover(r2, r1)
p <- vect(system.file("ex/lux.shp", package="terra"))
e <- as.polygons(ext(6, 6.4, 49.75, 50))
values(e) <- data.frame(y=10)
cv <- cover(p, e)
plot(cv, col=rainbow(12))
ci <- cover(p, e, identity=TRUE)
lines(e, lwd=3)
plot(ci, col=rainbow(12))
lines(e, lwd=3)
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