Try require(lattice) dotplot(num ~ let, data=mydf)
-- Don MacQueen Lawrence Livermore National Laboratory 7000 East Ave., L-627 Livermore, CA 94550 925-423-1062 On 3/17/16, 3:29 AM, "R-help on behalf of Ivan Calandra" <[email protected] on behalf of [email protected]> wrote: >Dear useRs, > >I would like to plot data points in a simple scatterplot. I don't have a >lot of data per category, so a boxplot does not make sense. > >Here are some sample data: >mydf <- data.frame(let=rep(letters[1:3],each=3), num=rnorm(9), >stringsAsFactors=FALSE) > >I would like to do that, which throws an error, most likely because x is >character: >plot(mydf$let, mydf$num) > >If I convert to factor(), it plots a boxplot with no possibility (AFAIK) >to plot points: >mydf$let <- factor(mydf$let) >plot(mydf$let, mydf$num, type='p') > >I know I can use the function points() in a somewhat convoluted manner: >plot(mydf$num, xlim=c(1,3), type='n', xaxt='n') >axis(side=1, at=1:3, labels=levels(mydf$let)) >points(as.numeric(mydf$let), mydf$num) > >Isn't there a simple(r) way? Maybe I just missed something obvious... > >Thank you in advance for your help, >Ivan > >-- >Ivan Calandra, PhD >University of Reims Champagne-Ardenne >GEGENAA - EA 3795 >CREA - 2 esplanade Roland Garros >51100 Reims, France >+33(0)3 26 77 36 89 >[email protected] >-- >https://www.researchgate.net/profile/Ivan_Calandra >https://secure-web.cisco.com/1yNnarZiCKUGYfSH5J2-EbF7-AArb-PmFBicLRM4tZ6aU >HoIat5tkl5G1tDBWGbmAtfy2rKUMIAZ66QtApYQAaNn3CMmTJjQ1hLMhdkSkvRy5Xybui_V323 >YC17MiU81U_pFgX509cGmkKLXUR0SrR37kW4nS_9dceMbPir9PJL6homj56lCgTPl4i-RnpaGa >0c3wWDheaJMEnOGkiNM-DTAg-TytL837N8slaOoHk30LoN_nZdOYAbK1afmJdDBChYrPhM28hk >VbVrP99eKJ8rZl3jO1VsBJ_2fO8BICSQnoamvGo1v9uBfNEP0yswoj9p0zeilFKVII8JQ6CFlx >jKfohfdIaEfstzBYALjaJSo/https%3A%2F%2Fpublons.com%2Fauthor%2F705639%2F > >______________________________________________ >[email protected] mailing list -- To UNSUBSCRIBE and more, see >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. > ______________________________________________ [email protected] mailing list -- To UNSUBSCRIBE and more, see 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.
