Myriam <fantasmita1948 <at> yahoo.fr> writes: > Dear Mr. Baddeley I just graduated from a Masters in > Applied Mathematics on Jun19th. My thesis was about spatial > distribution /a nalysis of some trees in a part of the Congo Basic > Forest. In my thesis I used your spatial package in R, and today > I'm doing a more deeper study about how we choise the r distance in > Function F(). I would like to be able to understand about value of > rmaxdefault as:
"Mr Baddeley" isn't here (probably) -- this is a generic help list for questions on R. > ripley <- min(diff(W$xrange), diff(W$yrange))/4 > rlarge <- if (!missing(lambda)) sqrt(1000/(pi * lambda)) else Inf > rmax <- min(rlarge, ripley) > For the ripley's calculation, I found your explanation in > the internet but for the rlarge I couldn't find it. Could > you explain why it is using the value inside of the sqrt (1000/(pi * > lambda)). You've given us just a fragment of a question here -- there's not enough context to work with. We don't know where the variable 'W' came from, although presumably from a Ripley's K calculation ... ? Please read http://tinyurl.com/reproducible-000 , and give us more information (e.g. the link (URL) to the explanation you say you found on the internet). I would also suggest that this question might be better suited for the r-sig-ecol...@r-project.org mailing list ... ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
