Rectangular Mask
Convert a mask or Dsurface with an irregular outline into a mask or Dsurface with a rectangular outline and the same bounding box. This enables contour plotting.
rectangularMask(mask)
mask |
object of class mask or Dsurface |
The covariates of new points are set to missing. The operation may be
reversed (nearly) with subset(rectmask, attr(rectmask, "OK")).
The results are unpredictable if the mask has been rotated.
A rectangular mask or Dsurface with the same ‘area’, ‘boundingbox’,
‘meanSD’, ‘polygon’ and ‘polygon.habitat’ attributes as mask. A
logical vector attribute ‘OK’ is added identifying the points
inherited from mask.
rMask <- rectangularMask(possummask) plot(rMask) plot(possummask, add = TRUE, col = "blue")
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