Dear Jason,
Convert Person to a factor with the levels in the order that you want.
Group_df$Person <- factor(Group_df$Person, levels = c("Them", "You", "Me"))
HTH,
Thierry
----------------------------------------------------------------------------
ir. Thierry Onkelinx
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Cel biometrie, methodologie en kwaliteitszorg / Section biometrics, methodology
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-----Oorspronkelijk bericht-----
Van: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] Namens
Jason Rupert
Verzonden: donderdag 5 februari 2009 17:09
Aan: R-help@r-project.org
CC: ggpl...@googlegroups.com
Onderwerp: [R] A way to "lock down" the order of bars for ggplot
"dodged"histogram
It appears that ggplot reorder the data for a "dodged" histogram based on
whether or not a specific variable has a value in the first bin.
I would like to be able to absolutely force the order of the variables in the
bin. For example, say I have three variables Me, You, and Them.
Me_df<-data.frame(Data = c(1:15), Person = "Me")
You_df<-data.frame(Data = c(10:20), Person = "You")
Them_df<-data.frame(Data = c(15:25), Person = "Them")
Group_df_tmp<-rbind(Me_df,You_df)
Group_df<-rbind(Group_df_tmp,Them_df)
counts <- ddply(Group_df, .(cut(Data, breaks=fullseq(range(Data), 5)), Person),
nrow)
names(counts) <- c("Bin", "Person", "Frequency")
qplot(Person, Frequency, data = counts, fill = Person, geom="bar",
stat="identity", width = 0.9, xlab="Person") + facet_grid(. ~ Bin)
However, I absolutely must have the bar order be Them, You, Me. Is there a to
fix the order of the bars so that they are always in the Them, You, Me order?
Thank you again for any feedback you can provide.
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