Re: [R] Reading ASCII files

From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk>
Date: Fri 23 Jul 2004 - 22:29:13 EST


On Fri, 23 Jul 2004, Cristian Pattaro wrote:

> Dear all,
> I need to read an ASCII file with diffent length lines.
>
> This is what is contained in the file gene.txt:
> 1st line ID description snp_id genotype
> 2nd line 10003 Low rs152240
> 3rd line 10003 Moderate rs189011 TC
> 4th line 10004 Conservative rs152240 GC
> 5th line 10004 Bad rs154354
> 6th line 10013 Bad rs152240
> 7th line 10019 Conservative rs152240 AC
> etc...
>
> This is what I would like to obtain in R:
> ID description snp_id genotype
> 10003 Low rs152240 NA
> 10003 Moderate rs189011 TC
> 10004 Conservative rs152240 GC
> 10004 Bad rs154354 NA
> 10013 Bad rs152240 NA
> 10019 Conservative rs152240 AC
>
> Read.table() doesn't work in these situations because of the irregular
> pattern of data. Have you got any suggestion?

Read the manual, for it does! In particular, look at the argument

    fill: logical. If 'TRUE' then in case the rows have unequal length,

          blank fields are implicitly added. See Details.

-- 
Brian D. Ripley,                  ripley@stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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Received on Fri Jul 23 22:42:20 2004

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