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.
