Question

update I have posted my solution below, the culprit was my own rename function that overrode reshape::rename

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I have been using the ggplot R package with little trouble until today. Today, I get an error using code that has previously worked, and when I debug it to the minimal working example, it still gives an error;

If I do this:

library(ggplot2)
d<- data.frame(x=1:3,y=1:3)
ggplot(data=d) + geom_line(aes(x,y))   

The following error is returned:

Error in rename(x, .base_to_ggplot) : 
  unused argument(s) (.base_to_ggplot)

The traceback is:

6: rename(x, .base_to_ggplot)
5: rename_aes(aes)
4: aes()
3: structure(list(data = data, layers = list(), scales = Scales$new(), 
       mapping = mapping, options = list(), coordinates = CoordCartesian$new(), 
       facet = FacetGrid$new(), plot_env = environment), class = "ggplot")
2: ggplot.data.frame(data = d, aes = c(x, y))
1: ggplot(data = d, aes = c(x, y))

The error does not occur after removing all objects using rm(list=ls()), but it is still not clear to me what object is causing this error or why – how can I figure this out?

Does anyone know what may have gone wrong?

Answer 1

The problem is caused because ggplot2 doesn’t use namespaces – this will be fixed in the next release.