[R] Little graph questions!

Deepayan Sarkar deepayansarkar at yahoo.com
Sun Feb 17 18:17:49 CET 2002


--- Paul Johnson <pauljohn at ku.edu> wrote:

> 1. When I use paste to edit a title, it inserts spaces where I don't 
> want them.
> 
> See the picture here:
> 
> http://lark.cc.ukans.edu/~pauljohn/R/ExampleCode/gamma4.png
> 
> and note that, after the equal signs and the number 1, there is a space 
> inserted whenever there is a comma separating text from variable. The 
> code in question is:
> 
> http://lark.cc.ukans.edu/~pauljohn/R/ExampleCode/template_gamma4.r
> 
> the line I use to set the title is:
> 
> oneHist <- hist(oneGamma,main=paste("here is one sample from your 
> gamma(sh=",sh,",sc=",sc,")"))


Use sep = "" in paste() (defaults to sep = " ").


> 3. In all of these examples, I have had trouble positioning text in 
> figures.  Because I don't know what the plotted values will be until the 
> model is run, it is hard to write coordinates for text(x,y,""). I 
> frequently wish there were a way to say "top left part of graph", but 
> the best i can come up with is to find the coordinates of the max or min 
> values of x and y and put the text there.
> 
> I have that code in the bottom of this one:
> 
> http://lark.cc.ukans.edu/~pauljohn/R/ExampleCode/template_poisson4.r
> 
> 
> After using Axum for years, this seems a bit odd to me, but I'm willing 
> to do it, if that is what you really intend us to do.

I'm not sure what exactly you're looking for, but have you tried working
with par("usr") ?

Deepayan


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