You need to make your variable into a factor and specify the order. > mymonths <- c("December", "March") > factor(mymonths) [1] December March Levels: December March > factor(mymonths, levels=month.name) [1] December March 12 Levels: January February March April May June July August September October ... December > month.name [1] "January" "February" "March" "April" "May" "June" "July" [8] "August" "September" "October" "November" "December" > month.abb [1] "Jan" "Feb" "Mar" "Apr" "May" "Jun" "Jul" "Aug" "Sep" "Oct" "Nov" "Dec" >
On Fri, Jan 28, 2011 at 4:53 PM, <kurt_h...@nps.gov> wrote: > > Greetings > Though I have months in chronological order in my data table, the data > were sampled every other month (i.e., February, April, June, August, > October, December), every time I try to plot them (on the x-axis) they are > plotted in alphabetical order. What am I missing? > Cheers > Kurt > > *************************************************************** > Kurt Lewis Helf, Ph.D. > Ecologist > EEO Counselor > National Park Service > Cumberland Piedmont Network > P.O. Box 8 > Mammoth Cave, KY 42259 > Ph: 270-758-2163 > Lab: 270-758-2151 > Fax: 270-758-2609 [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.