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From: Ethan A Merritt <EAMerritt@gmail.com>
Newsgroups: comp.graphics.apps.gnuplot
Subject: Re: plotting rectangle in a loop
Date: Tue, 05 Sep 2017 22:56:59 -0700
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dfgibarac@gmail.com wrote:

> I have in the code several
> set object
> command  and want to have them in a loop taking object coordinates
> from the file like doing it when plotting. How can I do it?

If the objects are rectangles you can do
   plot 'data' with boxxy

If the objects are circles you can do
   plot 'data' with circles

If the objects are ellipses then
   plot 'data' with ellipses

For general polygons it may be possible but probably not worth
the effort compared to simply editing the data file to contain
gnuplot commands and using "load polygon_commands".