Someone should have asked this already, but I couldn't find an answer. Say I have:
x = data.frame(q=1,w=2,e=3, ...and many many columns...)
what is the most elegant way to rename an arbitrary subset of columns, whose position I don't necessarily know, into some other arbitrary names?
e.g. Say I want to rename "q" and "e" into "A" and "B", what is the most elegant code to do this?
Obviously, I can do a loop:
oldnames = c("q","e")
newnames = c("A","B")
for(i in 1:2) names(x)[names(x) == oldnames[i]] = newnames[i]
But I wonder if there is a better way? Maybe using some of the packages? (plyr::rename etc.)