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From: Christoph Bersch <usenet@bersch.net>
Newsgroups: comp.graphics.apps.gnuplot
Subject: Re: drawing rectangles with gnuplot
Date: Wed, 20 Mar 2013 09:13:25 +0100
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Am 19.03.2013 19:28, schrieb Gene Wagenbreth:
> I want to draw rectangles with gnuplot. I dont want to plot anything.
>
> I create a rectangle with:
> set object 2 rect from -1,1 to 0,5 fc rgb "gold"
>
> but to see the rectangle I have to plot something:
> plot [-5:5] x lc rgb "white"
>
> How do I get gnuplot to just draw the rectangles I have defined ?

You must plot something to get the rectangles, as you said.

> Will gnuplot support hundreds of different rectangles ?

Yes:

unset border
unset tics
do for [i=0:1000] {
   x = 9*(rand(0)-0.5)
   y = 9*(rand(0)-0.5)
   set object rectangle from x, y to x+rand(0),y+rand(0) fc rgb "gold"
}
plot [-5:5] x lw 0 t ''

Christoph