reorder date columns in r

Question

Hi I have the following data.frame

    variable   name    new_skill    01/05/2015   01/08/2014   02/01/2015   02/05/2014

    task1      H&I     A             3.76           4.0         3.5        4.5
    task2      H&I    Broadband      3.12           3.30        4.5        5.5

There is 2 years worth of weekly dates in the columns above...

How to reorder them?

I tried something like data.frame[,order()]

this didn't work.

thanks

Answer 1

Try this,

df[, order(as.Date(colnames(df), format = "%d/%m/%Y"))]

This would sort the date columns according to the date and rest all columns would append to the end according to their occurrence in the original data frame.