From: Ivo Roupa <iroupa@...>
Date: 2010-05-11T23:51:20+09:00
Subject: Re: How to Plot Data?

Jean-Julien Fleck wrote:
> Hello,
> 
>> I would like to plot some data from .txt or .csv files. Is it possible?
>> And what gem do you use? I found rgnuplot but I can't use it...
> 
> Try using ctioga:
> 
> sudo gem install ctioga
> 
> and then
> 
> ctioga file.txt # -> plot column 2 versus column 1
> ctioga file.txt@1:4 # -> plot column 4 versus column 1
> ctioga file.txt  @1:4 # -> plot column 2 and column 4 against column 1
> 
> Try ctioga --help to see all you can do or look at the doc:
> http://sciyag.rubyforge.org/ctioga/doc/
> 
> NB: I don't think ctioga handles csv yet but a simple regexp could
> change all your commas in spaces and you get a valid file. Or even
> something like this should be enough.
> 
> cat file.csv | tr ',' ' ' > file.txt
> 
> NB2: ctioga is currently being reimplemented in ctioga2 which will
> have some nice features as being able to be launched from a file
> rather than from the command-line, but all the currently available
> features of ctioga have not yet been implemented in ctioga2. Look at
> http://ctioga2.rubyforge.org/doc/getting-started.html to see if it can
> fit your needs.
> 
> Cheers,

Jean-Julien Fleck

Thank you for your help.

Cheers

Ivo Roupa
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