[R] how to display a string containing greek chrs and variables

[baptiste auguie]

Hi,

try this,

plot.new()
x=0.8
text(0.5, 0.5, bquote(rho == .(x)))


HTH,

baptiste
2009/11/3  <J.delasHeras at ed.ac.uk>:
>
> I'm trying something that I thought would be pretty simple, but it's proving
> quite frustrating...
>
> I want to display, for instance, the correlation coefficient "rho" in a
> graph.
>
> I can do something like:
>
> text(x, y, paste("rho =", cor))
>
> where cor would be my previously calculated correlation coefficient, and x
> and y the coordinates.
> Obviously that displays "rho", not the greek letter rho.
>
> I can do also this:
>
> text(x, y, paste("\\*r =",cor), vfont = c("sans serif","bold"))
>
> that works, but that doesn't look very "pretty".
> What looks good is doing something like:
>
> text(x, y, expression(rho))
>
> But I haven't managed to make it do what I need.
>
> I can get this:
> text(x, y, expression(rho == 0.8))
>
> that looks good, but how can I substitute the "0.8" for teh name of a
> numeric variable whose value is 0.8?
>
> I'm going slightly mad... it can't be that hard.
>
> Thanks for any help!
>
> Jose
>
>
> --
> Dr. Jose I. de las Heras                      Email: J.delasHeras at ed.ac.uk
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