[R] mathematics in R graphics

[Chong Gu]

   Date: Wed, 23 Jun 1999 10:54:36 -0700 (PDT)
   From: Thomas Lumley <thomas at biostat.washington.edu>
   cc: r-help at stat.math.ethz.ch
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   On Wed, 23 Jun 1999, Chong Gu wrote:

   > 
   > I was reading Chapter 2 of the R manual that came with 64.1, but
   > couldn't get the behavior out of expressions as described in the
   > manual.  Is there any example on the subject?  For example, "x sub i"
   > is supposed to be produced by "x[i]", but where to put it?  I tried
   > mtext(text=x[i]) and R simply interprets that as a regular expression.

   You need
	   mtext(text=expression(x[i]))


   Thomas Lumley
   Assistant Professor, Biostatistics
   University of Washington, Seattle


Thanks.
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