secr (version 4.6.10)

rectangularMask: Rectangular Mask

Description

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.

Usage

rectangularMask(mask)

Value

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.

Arguments

mask

object of class mask or Dsurface

Details

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.

See Also

plot.Dsurface

Examples

rMask <- rectangularMask(possummask)
plot(rMask)
plot(possummask, add = TRUE, col = "blue")