Re: handling strings

[Stefan van der Walt]

On Tue, Sep 13, 2005 at 10:42:21AM -0500, Mike Miller wrote:
> On Tue, 13 Sep 2005, Stefan van der Walt wrote:
> 
> >To read in the data, you might want to take a look at 'textread' in 
> >octave-forge (recently, a C++ version was submitted).
> >
> >It shouldn't be difficult to modify it to do your string comparisons as 
> >well.
> 
> 
> Very nice!  It does work well for me.  I am actually using it to read in 
> pedigree data for genetic analyses.  When sex is designated by integers 
> (usually 1=male, 2=female), this seems to always work very nicely:
> 
> [fam,indiv,father,mother,sex] = textread("file.ped", "%s %s %s %s 
> %d%*[^\n]");
> 
> After that, a series of strcmp commands can be used to do the work of 
> recoding fam, father and mother.
> 
> One oddity is that sex (the %d column) becomes a row vector instead of a 
> column vector.  That's OK now that I know about it, but I think it would 
> make more sense for columnar data to be stored by default in column 
> vectors.

Are you using the newest version?  It should be an oct-file.  It is
much quicker than the old version, slightly more limited, and follows
the MATLAB interface.

Regards
Stéfan



-------------------------------------------------------------
Octave is freely available under the terms of the GNU GPL.

Octave's home on the web:  http://www.octave.org
How to fund new projects:  http://www.octave.org/funding.html
Subscription information:  http://www.octave.org/archive.html
-------------------------------------------------------------