setmask {adehabitat} | R Documentation |
Applies a mask on objects of class asc
or kasc
. In other
words, the function creates an object of class asc
or
kasc
, with NA
for all pixels NA
on the masking map.
setmask(x, mask)
x |
an object of class asc or kasc |
mask |
an object of class asc |
Returns an object of class asc
or kasc
Clement Calenge clement.calenge@oncfs.gouv.fr
asc
for additionnal information on
objects of class asc
.
data(puechabon) kasc <- puechabon$kasc image(kasc) elev <- getkasc(kasc, "Elevation") slope <- getkasc(kasc, "Slope") ## ma is the mask: only areas with elevation > 250 m ## are kept ma <- elev ma[ma < 250] <- NA ma <- getascattr(elev, ma) image(ma) ## The mask is applied on maps of slope slp <- setmask(slope, ma) image(slp) ## The mask is applied on all maps in kasc im <- setmask(kasc, ma) image(im)