Help with expression

I have a problem with expressions. I am trying to create a title where the 
parameter of interest is displayed as a Greek character. Which parameter is 
being considered is stored in a character variable.

As an example, if I have

param <- "alpha"

and then do

plot(0, 0, main = bquote(Parameter==.(param)))

then in the title I get "Parameter = alpha",
whereas I want the Greek character alpha.

David Scott


-- 

On Tue, 25 Jan 2011, David Scott wrote:

I have a problem with expressions. I am trying to create a title where the
parameter of interest is displayed as a Greek character. Which parameter is
being considered is stored in a character variable.

As an example, if I have

param<- "alpha"

param<- as.name("alpha")


HTH,

Chuck

and then do

plot(0, 0, main = bquote(Parameter==.(param)))

then in the title I get "Parameter = alpha",
whereas I want the Greek character alpha.

David Scott


--

Charles C. Berry                            Dept of Family/Preventive Medicine
cberry at tajo.ucsd.edu			    UC San Diego
http://famprevmed.ucsd.edu/faculty/cberry/  La Jolla, San Diego 92093-0901