Re: [Gnuplot-info] reading from a zip file

[Mahmood N. <nt_...@ya...>]

It doesn't work for me. You can create a data file and paste

10
20
30
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50

now these two commands generates different plots

gnuplot> plot "data.txt" using 1
gnuplot> plot "<zcat data.tar.gz" using 1

and 


gnuplot> plot "<zcat data.tar.gz" using 1:2
                                           ^
         x range is invalid



 
Regards,
Mahmood



________________________________
 From: Ethan A Merritt <eam...@gm...>
To: gnu...@li...; Mahmood Naderan <nt_...@ya...> 
Cc: Roman Dzvinkovsky <rom...@gm...> 
Sent: Thursday, May 9, 2013 10:25 AM
Subject: Re: [Gnuplot-info] reading from a zip file
 

On Wednesday, 08 May 2013, Roman Dzvinkovsky wrote:
> You can use named pipes (https://en.wikipedia.org/wiki/Named_pipe).
> 
> On *nix it is easy:
> % mkfifo input
> % gunzip -c input.gz >input &
> [2] 2379
> % gnuplot myplot.gp >out.png
> [2]  + done       gunzip -c input.gz > input
> 
> You'll need to write data into pipe as many times as you plot it in your
> script.

It's even easier than that.  
The pipe can be implicit in the plot command give to gnuplot:
   gnuplot>  plot "<zcat input.gz" using 1:2

    Ethan

> 
> 
> 2013/5/9 Mahmood Naderan <nt_...@ya...>
> 
> > Hi
> > It seems that ghbplot can not read data from a compressed archive (gz,
> > bzip2, ...).
> >
> > If that is true, there is there any tweak for that or it can read from
> > plain text only?
> >
> >
> >
> > Regards,
> > Mahmood
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