Binding columns with similar column names in the same dataframe in R

Question

I have a data frame that looks somewhat like this:

df <- data.frame(0:2, 1:3, 2:4, 5:7, 6:8, 2:4, 0:2, 1:3, 2:4)
colnames(df) <- rep(c(\'a\', \'b\', \         


        

Answer 1

I'm not at the computer now, so can't test this, but... this might work:

do.call(cbind, 
     lapply(names(df) function(x) do.call(rbind, df[, names(df) == x])) )