Re: [Gnuplot-info] ploting if a special character exist in the line

[Ethan A M. <eam...@gm...>]

On Tuesday, 03 September 2013, Mahmood Naderan wrote:
> I think awk is faster than strcol. Is that right?

Both awk and strcol have to actually parse the line,
so I suspect if speed is the issue then 
   plot '< grep M file'
is faster than either of them.

	Ethan

> 
> 
>  
> Regards,
> Mahmood
> 
> 
> 
> ________________________________
>  From: Leo Butler <l_b...@us...>
> To: BBands <bb...@gm...> 
> Cc: gnu...@li... 
> Sent: Wednesday, September 4, 2013 12:53 AM
> Subject: Re: [Gnuplot-info] ploting if a special character exist in the line
>  
> 
> 
>    Another way is to use the string operator: stringcolumn(3) or the
>    shorthand strcol(3). I should have seen that to start with.
> 
> Thanks, I wasn't aware of this. So you would use
> 
> plot "data.txt" u 1:(strcol($3) eq 'M' ? $2 : 1/0)
> 
> Leo
> 
> 
> 

-- 
Tradition is not the worship of ashes, but the preservation of fire.
  - Gustav Mahler