[R] Symbol escape sequence in xlab

Richard Dybowski rdybowski at btinternet.com
Mon Nov 19 23:21:58 CET 2001

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", 

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

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