[R] Antw: How to extract the upper xlim and ylim of my plot?

[Uwe Ligges]

Frank Bloos wrote:
> You may want to use the function corner.label from the plotrix-package.
>  
> Frank
> 
>>>> Mark Na <mtb954 at gmail.com> 21.07.2009 23:03 >>>
> Dear R-helpers,
> 
> I wish to place some text in a plot, at approx 10% of my upper xlim
> and
> approx 90% of my upper ylim, i.e.
> 
>> plot(log(all$SR,10)~log(all$AREA,10))
>> text(.1*max(xlim),.9*max(ylim),"text to be placed")
> 
> (I know how to give absolute coordinates for text location, but I wish
> to
> use relative coordinates).
> 
> My code (above) doesn't work because I don't know how to properly
> extract
> the upper xlim and ylim values.
> 
> Does anyone know how I could extract the upper xlim and ylim values
> (without
> using max(x-variable) or max (y-variable)...I wish to keep this as
> general
> as possible and not point to the original data.


For the original question see ?par and try

par("usr")


Uwe Ligges



> Thanks in advance,
> 
> Mark
> 
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> 
> 
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