Thanks to all!

 
Cleverson Zapelini 


________________________________
 From: Rolf Turner <r.turner@auckland.ac.nz>
To: Marcelino de la Cruz <marcelino.delacruz@upm.es> 

ch" <r-sig-geo@stat.math.ethz.ch> 
Sent: Friday, June 22, 2012 6:36 AM
Subject: Re: [R-sig-Geo] K (r)

On 22/06/12 20:22, Marcelino de la Cruz wrote:
> Several authors recomend using 0.25 * length of the shortest side of the polygon (I mean rectangle). For other geometries I don't know but I supose that the algorithm in spatstat selects the apropriate range of radii.

The default is 0.25 * (length of shortest side of the bounding box of the window).   With a slight tweak.
Type:

    rmax.rule

in the R console, to display the code that does the calculation.

Adrian recommends, in the help for Kest(), that the user *not* set "r" (the vector of radii)  but rather
go with the default chosen by the software that he wrote.

And anyone who does not follow Adrian's recommendations in respect of point pattern analysis
is, IMHO, a damned fool! :-)

    cheers,

        Rolf Turner
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