[R-sig-Geo] Test for difference between two pint patterns

[Marcelino de la Cruz Rot]

Hi Paolo, see the help page of Kcross(), pcfcross() or any other crossed 
function in spatstat (and also that of envelope() for the tests).

Best,

Marcelino

El 17/07/2017 a las 10:32, Paolo Piras escribió:
> Hi folks,
>
> I'm new in point pattern analysis; thus my question could appear trivial for experts;
>
> Given two ppp objects (spatstat package) [with different number of points] I'm looking for a way to assess the statistical difference in the distributions of points. studpermu.test() seems doing the job but for groups of point patterns while I have only two distributions.
>
> Kest() could be used to look for deviation from Poisson distribution but I should compare the two patterns.
>
> I think a hand-made permutation test where points are randomly re-assigned between the two distribution and K stat is computed at any run (and compared with the observed ones) could be ok but I'm not sure however.
>
> Thanks in advance for any advice
>
> Paolo
>
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>
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-- 
Marcelino de la Cruz Rot
Depto. de Biología y Geología
Física y Química Inorgánica
Universidad Rey Juan Carlos
Móstoles España