The posting guide asked for 'at a minimum' information, which you have
not provided (nor do we know what graphics device this is).
But on many OSes and devices simply use the Unicode character "\u00b1".
Or use plotmath (see ?plotmath).
On 25/06/2012 12:03, gianni lavaredo wrote:
dear reserachers,
I am looking for a expression about a special symbol (±) in a Legend and
add on front of "Mean ± SD" the symbol of bracket
sorry if the example is not great
disptest <- matrix(rnorm(10),nrow=10)
disptest.means<- rowMeans(disptest)
plot(1:10,disptest.means)
dispersion(1:10,disptest.means,(disptest.means+disptest
),(disptest.means-disptest ),intervals=FALSE,arrow.cap=0.001,arrow.gap=0)
legend("topleft",
legend=c("Mean","Mean +/- SD"),
pch=c(1,NA),
bty="n",cex=1.3)
thanks for all suggestions
Gianni
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--
Brian D. Ripley, rip...@stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
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