On Oct 21, 2011, at 11:27 AM, Rich Shepard wrote:
For an axis label I want to include the Greek letter mu within the
string.
I've not found the proper way of including that expression within the
string.
What I want is "Conductivity (uS/cm)" with the 'u' replaced by mu.
When I
try "Conductivity (" expression(paste(mu)) "S/cm)" I get an error.
If I
don't separate Conductivity and S/cm with parentheses the string
'expression(paste(mu))' displays in the lable.
try:
plot(1,1, xlab=expression(Conductivity~"("*mu*S/cm*")") )
Parens are the only characters that need to be quoted and you do need
to use proper plotmath connectors, "~" and "*" depending on whether
you ant a space to appear or not. I don't hink you can join character
values and expression values in the manner that you offer but I admit
I never tried it, so I don't know for sure. Generally "language" and
"expression" objects have their own special set of functions and syntax.
What am I doing incorrectly?
Rich
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David Winsemius, MD
West Hartford, CT
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