[R] envelopes of simulations

From: Sara Mouro <sara_at_gmesintra.com>
Date: Fri 13 Jan 2006 - 00:20:02 EST


I am writing you because I could not plot the confidence envelopes for functions Jest, Jcross, Jdot, Jmulti, and L, using the Spatstat package.

I have already understood how to do that for Kest or Jest, that is: JEnv <- plot(envelope(PPPData, Jest))

        Where PPPData is my ppp object.

However, for Jcross I must specify the two marks I want to analyse. That is, usually I would get the Jcross doing: Jc <- Jcross(PPPData,"Aun","Qsu")

        For marks "Aun" and "Qsu".

For L function, I can make:
K <- Kest (PPPData, correction="isotropic") plot (K, r-sqrt(iso/pi)~r)

But I could not understand how to put all that together.

Resuming, I do not understand how can I use the envelope function:
- to plot Jcross (where and how do I specify types/marks ??)

Hope someone can please help me on this. I have already looked at the package's manual, but I could not find any example similar to what I am trying to do.

Best Regards,
Sara Mouro.

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