On 14/05/2010 3:51 PM, David Winsemius wrote:
Some of the help page examples use the form:
opar <- par(<something>)
.....plotting activities...
par(opar)
This seems to "work" well, yet I have read in some places
Please include commented, retrievalbe citations for "some places".
that it is
not the preferred method to keep you parameters from getting
corrupted. What is the preferred method?
The above, with the restore wrapped in on.exit(), as your sources should
have said.
Duncan Murdoch
A worked example from a recent posting with minor additions:
opar <- par(mar=c(3,5,0,5))
layout(rbind(c(4,1,1,5), c(2,2,3,3)), widths=c(1,1,1,1),
heights=c(.75,2.25))
barplot(0,0, axes=FALSE)
legend(x=0.5, y=0, legend=c("Example 1", "Example 2"),
pch=c(1,2), cex=1.5, xjust=1, yjust=0.5, bty="n")
plot(1:10,1:10, pch=1)
plot(1:20,1:20, pch=2)
par(opar)
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