I did look at ??pie ??graphics, as per my reply. which netted nothing of value.
thanks. ~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/ On Feb 25, 2013, at 12:38 PM, David Winsemius wrote: > > On Feb 25, 2013, at 7:37 AM, Nicole Ford wrote: > >> 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. > > So at that point, why not issue the command: > > plot.new() # ? > > Graphics problems can be very system specific. Follow-up should include a > proper adherence to the Posting Guide advice about the necessary problem > description. You should assist R help by first educating yourself and then > giving your students proper training in how to construct questions for R-help. > >> >> 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) > > The graphics package is part of the base installation. As far as I know you > cannot reinstall it. You would instead need to reinstall R if you thought her > installation if R was corrupt. > > -- > David. > >> >> 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) >> > > David Winsemius > Alameda, CA, USA > [[alternative HTML version deleted]]
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