setmask: Applies a Mask on Objects of Class 'asc' or 'kasc'
In ClementCalenge/adehabitat: Analysis of Habitat Selection by Animals

Description Usage Arguments Value Author(s) See Also Examples

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.

1	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)