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Groups > comp.graphics.apps.gnuplot > #1282
| From | TonyG <tgozdz@gmail.com> |
|---|---|
| Newsgroups | comp.graphics.apps.gnuplot |
| Subject | Re: How to display the value in the n-th column in the 3rd from the last row in the file on a chart? |
| Date | 2012-07-19 08:13 -0700 |
| Organization | http://groups.google.com |
| Message-ID | <394aff7c-e600-4d04-8077-fa09f16a1ebe@googlegroups.com> (permalink) |
| References | <4cbe6f01-15ae-4e98-8f87-1975d57b4b5a@googlegroups.com> <ju96j0$saq$1@dont-email.me> |
On Thursday, July 19, 2012 10:45:52 AM UTC-4, sfeam wrote:
> TonyG wrote:
>
> > I assume gnuplot 4.6 does not have a dedicated data file line
> > addressing mechanism and I would have to use a script. So, how do I
> > display a specific value copied from a specific file (generated by a
> > script) on a chart (using, for example, the 'set label 1 sprintf("a =
> > %3.4f", a) at 500,50' command, a situation described in the title of
> > my post?
>
>
>
> Foo = system("tail -3 filename")
> Labeltext = word(Foo,N)
> set label 1 Labeltext at some_x, some_y
At first, I jumped in joy at your suggestion (I was already fiddling with the 'system' command), but then, using your syntax on a Windows XP system--and similar expressions--I get
gnuplot> load 'test.gp'
"test.gp", line 15: warning: system evaluation not supported by MS-Windows 32 bit
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How to display the value in the n-th column in the 3rd from the last row in the file on a chart? TonyG <tgozdz@gmail.com> - 2012-07-19 04:07 -0700
Re: How to display the value in the n-th column in the 3rd from the last row in the file on a chart? sfeam <sfeam@users.sourceforge.net> - 2012-07-19 07:45 -0700
Re: How to display the value in the n-th column in the 3rd from the last row in the file on a chart? TonyG <tgozdz@gmail.com> - 2012-07-19 08:13 -0700
Re: How to display the value in the n-th column in the 3rd from the last row in the file on a chart? sfeam <sfeam@users.sourceforge.net> - 2012-07-19 13:32 -0700
Re: How to display the value in the n-th column in the 3rd from the last row in the file on a chart? TonyG <tgozdz@gmail.com> - 2012-07-21 08:19 -0700
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