| 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 calenge@biomserv.univ-lyon1.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)