Hi!

Why not use, for example, KCross spatstat function, given two point
patterns: one for male individuals and one for female ones?


2012/5/9 Wall, Wade A ERDC-RDE-CERL-IL <Wade.A.Wall@usace.army.mil>

> Hi all,
>
> I have a data set that consists of x,y coordinates for individual plants,
> along with sex of the individual.
>
> Example
>
> Ind     sex     x       y
> 1       F       10      5
> 2       M       9       4
> . . .
> 200     M       20      4
>
> for 20 populations of the species. I would like to know if males and
> females are randomly dispersed, or tend to segregate.
>
> I would like to use Philip Dixon's method (1994), and there is an
> implementation in the R package "spatialsegregation" (dixon(X, prepR=0)).
> However,
> I am not very familiar with spatial analyses in R and am not sure how to
> structure the input object X. The function description says "Bivariate i.e.
> 2-type point pattern (see package 'spatstat')"
>
> Does anyone know how to structure the data that I have (example above) so
> that I can use dixon()? Thanks for any help.
>
> Wade A. Wall
>
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