[R] Pulling strings from a Flat file

Bill.Venables at csiro.au Bill.Venables at csiro.au
Wed Apr 6 09:05:08 CEST 2011

Isn't all you need read.fwf?
From: r-help-bounces at r-project.org [r-help-bounces at r-project.org] On Behalf Of Kalicin, Sarah [sarah.kalicin at intel.com]
Sent: 06 April 2011 09:48
To: r-help at r-project.org
Subject: [R] Pulling strings from a Flat file


I have a flat file that contains a bunch of strings that look like this. The file was originally in Unix and brought over into Windows:

E123456E234567E345678E456789E567891E678910E. . . .
Basically the string starts with E and is followed with 6 numbers. One string=E123456, length=7 characters. This file contains 10,000's of these strings. I want to separate them into one vector the length of the number of strings in the flat file, where each string is it's on unique value.

> aa<- file("Master","r", raw=TRUE)
> readChar(aa, cc, useBytes = FALSE)
[1] "E123456"  "\nE23456" "7\nE3456" "78\nE456" "789\nE56" "7891\nE6" "78910\nE"
> close(aa)
> unlink("Master")

The biggest issue is I am getting \n added into the string, which I am not sure where it is coming from, and splices the strings. Any suggestions on getting rid of the /n and create an infinite sequence of 7's for the string length for the cc vector? Is there a better way to do this?


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