小编Vu *_*ynh的帖子

I have some data that looks like this:

    country agdp apop
1        US  100  100
2 Australia   50   50

The variable names are agdp and apop, but I would like them to be gdp and pop. My real data has many, many variables that all need that transformation.

And this is what my desired outcome:

 country gdp pop
1        US  100  100
2 Australia   50   50

Reproducible code below:

df <- data.frame(stringsAsFactors=FALSE,
     country = c("US", "Australia"),
        agdp = …