More plotting comments

Date: Mon, 14 Feb 2000 20:23:23 +1100
From: Telford Tendys <telford@progsoc.uts.edu.au>
To: r-devel@stat.math.ethz.ch
Subject: [Rd] More plotting comments

Finally, when I do a plot like this:

	curve( sin, lty="12345678" )

I get a reasonable looking curved line on my X11 window but then I
do the same thing in postscript I get the interesting result that the
dashes are very tiny when viewed in ghostscript (5.10) but sensible
length on paper from the printer. Is this a ghostscript bug or is there
something non-portable about R output files?

An simple example of setting up an eps output for a report might be
helpful because a lot of people will be doing it. Just a suggestion:

ps.options( horizontal=FALSE, onefile=FALSE, paper="special" )
postscript( "/tmp/test.eps", width=4, height=3 )
par( mar=c( 3.5, 3.5, 0, 0 ), ps=10, mgp=c( 2.5, 1, 0 ))
curve( sin, 0, 2 * pi, lty="1494" )
dev.off()

I know it isn't as flashy as some of the existing examples but it does
demonstrate the typical things that you are going to need such as
point sizes, paper sizes, margins, etc. It is also something that can
quickly be grabbed and used by most people.