Dear Ista, Thank you! It works perfectly! -fra
2013/2/18 Ista Zahn <istaz...@gmail.com>: > Hi, > > You are making it more complicated than it needs to be. You already > provided the data.frame in the ggplot call, so you don't need to > specify it in the aes calls. The various factor() and as.factor() > calls are also unnecessary. So stripping away this extra stuff your > plot looks like > > ggplot(data=mydf, aes(x=size2, > y=median_price, > group=clarity, > colour=clarity)) + > geom_line() + > facet_wrap(~ size1) > > which does give the desired display. > > Best, > Ista > > On Mon, Feb 18, 2013 at 6:04 AM, francesca casalino > <francy.casal...@gmail.com> wrote: >> Dear R experts, >> >> I am trying to arrange multiple plots, creating one graph for each >> size1 factor variable in my data frame, and each plot has the median >> price on the y-axis and the size2 on the x-axis grouped by clarity: >> >> library(ggplot2) >> >> df <- data.frame(price=matrix(sample(1:1000, 100, replace = TRUE), ncol = 1)) >> >> df$size1 = 1:nrow(df) >> df$size1 = cut(df$size1, breaks=11) >> df=df[sample(nrow(df)),] >> df$size2 = 1:nrow(df) >> df$size2 = cut(df$size2, breaks=11) >> df=df[sample(nrow(df)),] >> df$clarity = 1:nrow(df) >> df$clarity = cut(df$clarity, breaks=6) >> >> >> mydf = aggregate(df$price, by=list(df$size1, df$size2, df$clarity),median) >> >> names(mydf)[1] = 'size1' >> names(mydf)[2] = 'size2' >> names(mydf)[3] = 'clarity' >> names(mydf)[4] = 'median_price' >> >> # So my data is already in a "long" format I think, but when I do this: >> >> ggplot(data=mydf, aes(x=mydf$size2, y=mydf$median_price, >> group=as.factor(mydf$clarity), colour=as.factor(mydf$clarity))) + >> geom_line() + facet_wrap(~ factor(mydf$size1)) >> >> >> I get this error: >> "Error in layout_base(data, vars, drop = drop) : >> At least one layer must contain all variables used for facetting" >> >> Can you please help me understand what I am doing wrong? >> -fra >> >> ______________________________________________ >> 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. ______________________________________________ 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.
