From: "baptiste Auguié" <ba208@...>
Date: 2007-11-25T23:53:41+09:00
Subject: Re: extract consecutive lines of data

Thanks, this is exactly what i was looking for: I just never find my  
way in these regular expressions, not to mention how to adapt it in  
Ruby code!

On 25 Nov 2007, at 14:22, Robert Dober wrote:

> On Nov 25, 2007 2:24 PM, baptiste Auguié <ba208@exeter.ac.uk> wrote:
>> Thanks, this didn't work either (the data file contains lines of text
>> before and after the data).
>
> grep is your friend
>

> 508/8 > cat data.txt && cat detect.rb && ruby detect.rb data.txt
>  1 2 3
> Some text
>  4 5 6
>   more text
>  7 8 9
> .42 42 42
>  23 7.3e-8 3.4
> #!/usr/local/bin/ruby
> # vim: sw=2 ts=2 ft=ruby expandtab tw=0 nu syn:
>
> p ARGF.readlines.grep(/^\s*[\.\d]/).map{ |line|  
> line.chomp.split }.transpose
>
> [["1", "4", "7", ".42", "23"], ["2", "5", "8", "42", "7.3e-8"], ["3",
> "6", "9", "42", "3.4"]]
>
> BTW don't forget to tell us the mark you got ;)
>

do you get a mark for a PhD? I can only tell you the imaginary part  
is gonna be negative, in terms of propagation constant.


_____________________________

Baptiste Auguié

Physics Department
University of Exeter
Stocker Road,
Exeter, Devon,
EX4 4QL, UK

Phone: +44 1392 264187

http://newton.ex.ac.uk/research/emag
http://projects.ex.ac.uk/atto
______________________________