[R] Modifying a built-in R function

jcfaria joseclaudio.faria at gmail.com
Mon Mar 2 22:55:34 CET 2009

Alternatively, gives a looked in the package bpca and biplotGUI, both
available on CRAN.


japal wrote:
> Hello,
> Something incredible (at least for me) has happen. Yesterday night I
> downloaded biplot.R to edit this function and add new features I wished.
> Namely I wanted to plot points belonging to different groups using
> different colors and symbols. I identified which part of the original code
> I had to modify. Then, I rename biplot by biplotes and executing
> biplotes(x), being x a princomp class object, the function did what I
> wanted.
> The problem is that today I type exactly the same (after sourcing my
> script file incluiding biplotes) but  biplotes(x) execute the original
> biplot function. Also, if I invoke any of the new arguments I wrote in the
> code then multiple warnings messages are displayed. I don't understand
> what is the problem. Yesterday it works perfectly. Why R does not execute
> my code and call the original biplot function?
> Thanks in advance,
> Javier.

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