hello, all.
one of my students is having an issue with the pie & legend function.
this is her code. (below)
it works just fine for me.
her error is "plot.new has not been called yet". i know this means her pie
chart is coming up blank so the legend will not work.
according to ?graphics this package *is* supposed to handle these
functionalities. however, when i tried to install it i get the following error:
Warning message:
package ‘graphics’ is not available (for R version 2.15.2)
however, the ?graphics page shows it is indeed available for this version of R.
Package: graphics
Version: 2.15.2
Priority: base
Title: The R Graphics Package
Author: R Core Team and contributors worldwide
Maintainer: R Core Team <r-c...@r-project.org>
Description: R functions for base graphics
Imports: grDevices
License: Part of R 2.15.2
Built: R 2.15.2; ; 2012-10-26 16:14:39 UTC; unix
thoughts are greatly appreciated.
> strength <- factor(c(rep("8.0-9.9", 2), rep("7.0-7.9", 12), rep("6.0-6.9",
> 108)))
> plot(strength, xlab="Earthquake Strength", ylab="Frequency")
> histogram(strength, xlab="Earthquake Strength", ylab="Relative Frequency by
> Percentage")
> pie(table(strength))
legend("topright", title="Earthquake Strength", cex=0.6, pch=16, col=c("white",
"blue", "red"), legend=c("6.0 to 6.9", "7.0 to 7.9", "8.0 to 8.9"), ncol=3)
~Nicole Ford
Ph.D. student
Graduate Assistant/ Instructor
University of South Florida
Government and International Affairs
office: SOC 012M
e: nmhi...@mail.usf.edu
http://gia.usf.edu/student/nford/
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