From help-request at octave dot org Wed Jan 11 15:24:02 2006
Subject: Re: large input data
From: Joe Koski <jkoski11 at comcast dot net>
To: Octave Help <help at octave dot org>
Date: Wed, 11 Jan 2006 14:22:15 -0700

A more flexible way to read an ascii file, (but much slower during
execution) is to read files line-by-line with fscanf(fileid,template,"C").
Where template is the same as C format definitions ('%i%f%g', etc.). If the
file's not too large, you can pick your way through, skipping lines,
changing format in the middle, etc. See the octave manual for details.

Another trick for reading several inputs on one line is the read the numbers
(for example: 1.5,3,10) as a string, and then use str2num to get the
numerical values.  

Joe


on 1/11/06 1:56 PM, Robert A. Macy at macy at california dot com wrote:

> Similar requirement.  Sometimes the data is scooped up from
> an Excel spread sheet, or sometimes just a lot of terms.
> 
> I use a text editor (sometimes notepad) to make an ascii
> data file, dataset.txt.  Include "fake" headers at the top
> of the file [those five lines at the top, describing what
> the data is] to make it look like a standard ascii style
> octave file.  
> 
> then use...
>>> load -force "dataset.txt";
> ...to load it in, and overwrite the specific variable.
> 
>             - Robert -
> 
> On Wed, 11 Jan 2006 18:47:56 +0000 (GMT)
>  Hayden Rampadarath <halien69 at yahoo dot co dot uk> wrote:
>> Hi,
>>    
>>   i am using GNU Octave version 2.1.71, in Cygwin for my
>> research project, and have a lot of input data. i would
>> like to know an easier method than typing them in. Can i
>> do some thing for it to read it from say notepad, or
>> something??
>>    
>>   Also, how do i make and save plots using this version??
>>    
>>    
>>   Thanks 
>>   Hayden
> 
> 
> 
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