[R] Greek in text()

[Peter Dalgaard BSA]

Bill Simpson <W.Simpson at gcal.ac.uk> writes:

> I have gone over the examples and can't figure this out:
> rho<-.77
> text(x=.05,y=.5,paste(expression(rho),rho))
> 
> I was hoping to get this to print a Greek rho with 0.77 beside it.
> Instead I get: rho 0.77 (i.e. Roman lettering)
> The help on expression() is quite opaque so I don't understand how it
> works.

Pasting an expression and a number gives a character string before the
math plotting routines get to it:

> paste(expression(rho),rho)
[1] "rho 0.77"

try

substitute(rho==val,list(val=rho))

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907
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