Groups > comp.graphics.apps.gnuplot > #655

Re: How to test if a file exist ? (to plot or not)

From	ab <ab.3942@googlemail.com>
Newsgroups	comp.graphics.apps.gnuplot
Subject	Re: How to test if a file exist ? (to plot or not)
Date	2011-10-21 05:32 -0700
Organization	http://groups.google.com
Message-ID	<5176e2a3-1485-4e41-a179-f7a4cf03d5b2@x20g2000vbl.googlegroups.com> (permalink)
References	<4e8dd9f3$0$30772$ba4acef3@reader.news.orange.fr>

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On 6 Okt., 18:40, Philippe Marsault <philippe.marsa...@freeeee.fr>
wrote:

> Dear all,
>
> I wish to test if curve-1.dat and curve-2.dat exist before to use the
> plot directive with multiple file.
>
> How to proceed ?
>
> Thanks in advance for your help and this excellent soft.
> --
> Pour répondre en direct, virez les eeeeee free de trop
>
> <°)))- Philippe  -<<<

Use

 isexist= system ("file curve-1.dat  | grep ERROR")
 if ( strlen(isexist) == 0 )    : file exists

The file command returns a string including  ERROR if the file is
notexisting.

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How to test if a file exist ? (to plot or not) Philippe Marsault <philippe.marsault@freeeee.fr> - 2011-10-06 18:40 +0200
  Re: How to test if a file exist ? (to plot or not) ab <ab.3942@googlemail.com> - 2011-10-21 05:32 -0700

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