[R] PostScript output error

[Paul Murrell]

hi


>> > I found a problem in generated postscript file which
>> > has following sequence:
>> >
>> >   x <- 1:30
>> >   postscript("output.ps")
>> >   par(mfg=c(1,1,2,2))
>> >   plot(x,sin(x))
>> >   plot(x,sin(x))
>> >   plot(x,sin(x))
>> >   plot(x,sin(x))
>> >   dev.off()



as Brian Ripley pointed out, par(mfcol=c(2,2)) or par(mfrow=c(2,2)) will
"fix" your "problem".

the intended use of par(mfg) is to allow you to add extra bits to graphs in
a multiple-graph arrangement.  for example, something like ...

par(mfrow=c(2,2))
for (i in 1:4) plot(i)
par(mfg=c(1,2,2,2))
mtext("some text i forgot to add when i first made this graph")

however, this does not excuse R  for misbehaving in your example.  I will
take a look at what we should do to fix it - thanks for bringing this
problem to our attention !

paul


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