How to avoid: read.table truncates numeric values beginning with 0

Question

I want to import a table (.txt file) in R with read.table(). One column in my table is an ID with nine numerals - some ids begin with a 0, other wi

Answer 1

As said in Ben's answer, colClasses is the easier way to do it. Here is an example:

read.table(text = 'col1 col2
           0012 0001245',
           head=T,
           colClasses=c('character','numeric'))

  col1 col2
1 0012 1245      ## col1 keep 00 but not col2