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complement.owin(w)"owin" describing
a window of observation for a point pattern."owin"
representing the complement of the window, i.e. the inside
of the window becomes the outside.w is a rectangular window this produces an error.
Otherwise, it yields a window object (of class "owin",
see owin.object) representing the set complement
of w inside its enclosing rectangle. For polygonal windows
this is achieved by reversing the sign of each boundary polygon,
while for binary masks it is achieved by negating the pixel values.owin,
owin.object# polygonal
data(demopat)
w <- demopat$window
outside <- complement.owin(w)
# mask
w <- as.mask(demopat$window)
outside <- complement.owin(w)Run the code above in your browser using DataLab