Selecting non-consecutive columns in R tables

Question

Let\'s say I have a some table, T. Assume T has 5 columns. I understand how to select any consecutive subset of columns and store them as a new table. For that I would use brack

Answer 1

You can also use logical values. Eg. df[c(TRUE,FALSE,TRUE)] selects the first and third column. The logical vector must have a number or elements equal to the number of columns in the data frame, otherwise its elements are replicated up to the number of columns.