On 10/03/2010 8:52 AM, Markus Loecher wrote:
Is it possible to mix symbols and evaluated objects inside the expression()
function ?
The following example shows what I am trying to achieve:
for (m in 1:3) {
plot(1:10); #just a place holder for the real plots
title(expression(y = m * lambda));
}
I want to actually evaluate the variable m but keep lambda as a symbol in
the title.
I tried to wrap an eval() around various subparts of the expression but to
no avail.
Going further, I ideally would like to mix text into the expression as well.
Any help would be appreciated.
Use bquote. It returns an expression after evaluating only the parts
wrapped in ".()". For example,
for (m in 1:3) {
plot(1:10); #just a place holder for the real plots
title(bquote(y == .(m) * lambda));
}
Duncan Murdoch
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