Fellow Users,
In Spatstat, if you have a ppp object with, say 100 points, how do you
create another ppp containing a random selection, N, of the original?
You can tell the function 'rthin' to make a sub-selection of points, i.e.
every point is removed with probability 0.5 but you CAN'T set N
You can't specify it in rthin, which I can understand for the simple
reason that this violates the independence of the sampling. If you put
a fixed limit on your resampling, the chance of being selected depends
on when some point is selected.
You could do it by hacking the object :
rthin.exact -
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