how to remove multiple columns in r dataframe?

Question

I am trying to remove some columns in a dataframe. I want to know why it worked for a single column but not with multible columns e.g. this works

album2[,5]         


        

Answer 1

If you only want to remove columns 5 and 7 but not 6 try:

album2 <- album2[,-c(5,7)] #deletes columns 5 and 7