alpha channel in ggplot2 does not work after installing 2.15
ggplot2, r
Solution
I can replicate the issue using R-2.15.0 and ggplot2 0.9.0.
As Ben noted, the standard way of specifying translucency in ggplot2 is to provide an explicit `alpha` argument. You should try to use this for all new plotting code.
I think a case could made that ggplot should support legacy specification of alpha via the colour argument. If you feel strongly about this, then file an issue.
Problem
after updating to R 2.15, the alpha channel in ggplot does not seem to work anymore. ``` plot(rnorm(100),rnorm(100),bg="#cc000055",pch=21) ``` works perfectly fine but ``` qplot(rnorm(100),rnorm(100),color="#cc000044") ``` does not! Also, the alpha() function from the ggplot2 package is not found anymore (I also tried ggplot2::alpha(). Is that a known problem? I wasn't able to find anything about online... Thanks!