
  
    Dear R users,
  Sometimes it is needed to read only some columns from a table, in  particulare for high frequency data. How it is possible to read just  some certain columns using read.table ( ). The reason could be keeping  space in R and in particular accelerating in reading data when the  number of rows are huge and some of them are not needed.
  Thank you very much,
  Amir
  
 
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