"FISCHER, Matthew" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED]
> In a plot, can I specify pch to be a greek symbol? (I looked at > show.pch() in the Hmisc package but couldn't see the right symbols in there). > If not, I guess I can get around this using text(x,y,expression()). I'm not sure where this is explained very well. Having ?font give a clue about this would be nice. Use font=5, the symbol font. To see what's in font=5: par(font=5, las=1) plot(0:15,0:15,type="n",ylim=c(15,0), main="Symbols in Font=5", xlab="", ylab="",xaxt="n", yaxt="n") axis(BOTTOM<-1, at=0:15, 1:16) axis(LEFT <-2, at=0:15) abline(v=0.5 + 0:14, h=0.5 + 0:14, col="grey", lty="dotted") # pch index of any cell is 16*row + column for(i in 0:255) { x <- i %%16; y <- i %/% 16; points(x,y,pch=i+1) } The Greek letters are from 65 to 90 and 97 to 122 in this font. Here are random points with Greek letters as the plot character: par(font=5) # Use Greek letter for plot characters from font=5 plot(0:1, 0:1, axes=F, type="n", xlab="", ylab="", main="Greek plotting characters") box() points(runif(100), runif(100), pch=c(65:90, 97:122)) -- efg Earl F. Glynn Scientific Programmer Stowers Institute for Medical Research ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html