[R] Symbol escape sequence in xlab

[Richard Dybowski]

I would like to label an x-axis with the nabla symbol. I have tried this 
with the following symbol escape sequence

     plot(1:5, 1:5, xlab=""); title(xlab="\\dl", vfont=c("serif symbol", 
"plain"))

but I got the warning message

     parameter "vfont" couldn't be set in high-level plot() function

Is it possible to use a symbol escape sequence in xlab?

Richard


-------------------------------
Richard Dybowski, 143 Village Way, Pinner, Middlesex  HA5 5AA, UK
Tel (mobile): 079 76 25 00 92

-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._