Use bquote:
ID <- 3
plot(1,1, main = bquote(ID ~ is ~ .(ID)))
Also please read the last line of every message to r-help regarding
reproducible examples. (None of your variables were defined.)
On 12/22/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
> Hello.
>
> I have a question that probably has a simple answer.
>
> I have a loop where several figures are plotted with each iteration. I
> calculate some descriptives to put in the title of the figure. When I use
> expression, since I want to combine math plotting symbols and the
> descriptives I calculate, I get an error. Here is an example of the code that
> I tried:
>
> plot(x,y, main=expression(paste("ID is", ID.i, italic(R)^2, r2.i, "RMSE",
> error.i)))
>
> where ID.i, r2.i, and error.i change for each iteration of the loop. I
> suppose the problem is that expression does not know to treat each of these
> as objects rather than part of a mathematical expression. Is there a way to
> display the value of ID.i, r2.i, and error.i within the expression?
>
> Thanks for any thoughts,
> Ken
>
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> and provide commented, minimal, self-contained, reproducible code.
>
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