On 5/15/07, Spilak,Jacqueline [Edm] <[EMAIL PROTECTED]> wrote: > > Thanks for your solution, it worked perfectly, it was exactly what I > wanted. I do have two more questions and hope you can help. I have > another analysis exactly like the last one except it is done by month > instead of year. When I graph it using barchart it makes the months go > in alphabetical order. Is there anyway to change it so that the months > go in the correct order (jan, feb, march, etc,). And how do I change > the colors of the bars in the graph, they are weird colors and I want to > change them.
It would help to have a reproducible example. The alphabetical order thing is a side effect of the factor() function, and to avoid it you need to supply the levels when you create the factor; e.g. > factor(month.name) [1] January February March April May June July [8] August September October November December 12 Levels: April August December February January July June March ... September > > factor(month.name, levels = month.name) [1] January February March April May June July [8] August September October November December 12 Levels: January February March April May June July August ... December (Note the different order of the levels) As for the colors, you can add either col=c("green","purple") or par.settings = list(superpose.polygon = list(col=c("green","purple"))) The first will change the color of the bars but not the legend, the second will change both. (The reasons this works are a bit convoluted if you are not familiar with lattice, and you don't really need to know, so I won't go into them) -Deepayan > Thanks so much for your help. > > -----Original Message----- > From: Deepayan Sarkar [mailto:[EMAIL PROTECTED] > Sent: May 10, 2007 4:58 PM > To: Spilak,Jacqueline [Edm] > Cc: r-help@stat.math.ethz.ch > Subject: Re: [R] Barplot by two variables > > On 5/10/07, Spilak,Jacqueline [Edm] <[EMAIL PROTECTED]> wrote: > > Hi all > > I have a bit of a problem. I want to make a barplot of some data. My > > > data is of a score that is separated by year and by a limit (above 3 > > and below 3 to calculate the score). > > Year Limit HSS > > 1999 ALT 0.675 > > 1999 VFR 0.521 > > 2000 ALT 0.264 > > 2000 VFR 0.295 > > > > I would like to have a barplot with year on the x axis and HSS on the > > y axis and the two limits as two different colors to show the > difference. > > Using (dataset$HSS, col=c("green","purple")) I get some of the plot > > but I don't know how to get labels on the bottom for each year and I > > can't get a legend for my barplot. Not really sure what I am doing > > wrong but any help would be much appreciated. > > Here's one solution using the lattice package: > > library(lattice) > barchart(HSS ~ factor(Year), data = dataset, origin = 0, > groups = Limit, auto.key = TRUE) > > -Deepayan > ______________________________________________ R-help@stat.math.ethz.ch 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.