Re: [R] Reading fixed column format

From: Barry Rowlingson <B.Rowlingson_at_lancaster.ac.uk>
Date: Wed 13 Sep 2006 - 11:15:53 GMT

Anupam Tyagi wrote:

> There are 356,112 records, and 326 variables. It has a fixed record length of
> 1283 positions, therefore "cut -b" can not be used.

Okay, thats 'large' enough to be awkward...

> It would be good to have a facility in R which defines the meta-data: labelling
> and structure of the dataset: positions of variables, their names, their lables,
> their levels (e.g. for ordered choice or group variables: yes, sometimes, no
> type responses). This can be saved as a seperate object and passed to a function
> that gets the named varibales from the ASCII file (names of variables to get can
> be given as arguments or as, attaches the meta data and creates a dataframe with
> all the meta-data attached. The meta-data of the dataframe could include notes
> at dataframe and variable level, and other information. This information is
> passed on to the plotting functions and used when formatting the output of
> statistical procedures.

  I think you need the following functions to build that kind of thing in R:

  Then its just 'substr' and similar string-chopping functions to build up the data from each line you want.

  If I had a spare day...

Barry



R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Wed Sep 13 21:18:15 2006

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.1.8, at Wed 13 Sep 2006 - 12:30:05 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.