Re: [R] bagplot - a rough R function

From: Martin Maechler <maechler_at_stat.math.ethz.ch>
Date: Thu 22 Sep 2005 - 01:55:56 EST

>>>>> "Peter" == Peter Wolf <pwolf@wiwi.uni-bielefeld.de>
>>>>> on Wed, 21 Sep 2005 16:49:10 +0200 writes:

    Peter> In the moment I am writing an R function for drawing
    Peter> bagplots (two dimensional boxplots).
    Peter> For some elements of the plot are found numerically
    Peter> the resulting plots differs a little bit from the correct bagplots.

    Peter> Here is the link to the actual version:

    Peter> http://www.wiwi.uni-bielefeld.de/~wolf/software/R-wtools/bagplot/bagplot.R     Peter> ( R code )

    Peter> http://www.wiwi.uni-bielefeld.de/~wolf/software/R-wtools/bagplot/bagplot.pdf     Peter> (examples and description)

    Peter> Now I am looking for examples to test / to improve my function.     Peter> Where can I get data sets and the corresponding correct bagplots?

I'll send you my (unpublished) version of my package 'bagplot' {{the one I've never released because of segmentation fault bugs   somewhere in Fortran}} in a private E-mail.

In my version I had started make a function

   bag()
which *computes* all the information needed and then returns an (S3) object "bag". Then, the plotting happens via the

    plot.bag <- function(.....) {..........} method.

So you can say

   plot(bag(.........), ........)

if you want both (computing and plotting) at once, but can also separate the two --- following very much the modern "S" way "whole object ..".

Martin



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