Ordering the axis labels in geom_tile

Question

I have a data frame containing order data for each of 20+ products from each of 20+ countries. I have put it in a highlight table using ggplot2 with code simila

Answer 1

Maybe a little bit late,

with(mymelt,factor(variable,levels = rev(sort(unique(variable)))))

this function doesn't order, because you are ordering "variable" that has no order (it's an unordered factor).

You should transform first the variable to a character, with the as.character function, like so:

with(mymelt,factor(variable,levels = rev(sort(unique(as.character(variable))))))