Hi,
Is it possible to create a legend in a pairs() plot?
For example, suppose I have the following R codes:
data(iris)
pairs(iris[1:4], main = "Anderson's Iris Data -- 3 species",
pch = 21, bg = c("red", "green3",
"blue")[codes(iris$Species)])
How can I created a legend that shows which colour represents to which
Iris species?
Thanks,
Kevin
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Ko-Kang Kevin Wang
Statistical Analysis Division Leader
Software Developers' Klub (SDK)
University of Auckland
New Zealand
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Ko-Kang Kevin Wang wrote:> > Hi, > > Is it possible to create a legend in a pairs() plot? > > For example, suppose I have the following R codes: > > data(iris) > pairs(iris[1:4], main = "Anderson's Iris Data -- 3 species", > pch = 21, bg = c("red", "green3", "blue")[codes(iris$Species)]) > > How can I created a legend that shows which colour represents to which > Iris species?What about something like data(iris) pairs(iris[1:4], main = "Anderson's Iris Data -- 3 species", pch = 21, bg = c("red", "green3", "blue")[codes(iris$Species)]) par(xpd=TRUE) legend(0, 1, as.vector(unique(iris$Species)), fill=c("red", "green3", "blue")) Uwe Logges -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
On Tue, 25 Sep 2001 22:07:15 +1200 (NZST), you wrote in message <Pine.SOL.4.21.0109252204270.17045-100000 at stat1.stat.auckland.ac.nz>:>Hi, > >Is it possible to create a legend in a pairs() plot? > >For example, suppose I have the following R codes: > > data(iris) > pairs(iris[1:4], main = "Anderson's Iris Data -- 3 species", > pch = 21, bg = c("red", "green3", "blue")[codes(iris$Species)]) > >How can I created a legend that shows which colour represents to which >Iris species?The legend function is the general purpose way to put a legend on a plot. For the legend you want, you'd use legend(locator(),legend=levels(iris$Species), pt.bg = c("red", "green3", "blue"), pch=21) The locator() function lets you position it manually. You might want to put in fixed values, instead. The default pairs() call gives no space for a legend, so you'll probably want to use "oma=c(4,4,6,10)" or something to give yourself some extra space for the legend. Duncan Murdoch -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._