spatstat functions
quadratcount(<ppp>, nx = , ny = )
to define subregions (nx
columns,ny
rows) and count events per subregionquadrat.test(<quadratcount>)
for CSR hypothesis testing. Extra arguments:alternative =
: possible are"two-sided"
(default),"clustered"
and"regular"
method =
: defaults to"Chisq"
;"MonteCarlo"
is also possible (CSR distribution by simulations)