R help - Aug 2000 - variable value in mathplot

I'm putting a title over different plots, where 'that'
varies. How do I make the value appear? Example:

that <- 1
plot(1:10)
title(expression(paste(hat(theta),'= ',that)))


Yudi Pawitan     yudi at stat.ucc.ie
Department of Statistics UCC
Cork, Ireland
Ph   353-21-490 2906
Fax 353-21-427 1040 
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On Tue, 29 Aug 2000, Yudi Pawitan wrote:
> I'm putting a title over different plots, where 'that'
> varies. How do I make the value appear? Example:
> 
> that <- 1
> plot(1:10)
> title(expression(paste(hat(theta),'= ',that)))
We've been here before. To get an expression either use parse on your
pasted character string or substitute on an expression.  There are worked
examples in the list achives. The neatest is

title(substitute(hat(theta) == that, list(that=that)))

(note it is == not =)


-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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