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From: =?ISO-8859-1?Q?Hans-Bernhard_Br=F6ker?= <HBBroeker@t-online.de>
Newsgroups: comp.graphics.apps.gnuplot
Subject: Re: splot centers at bottom of plot
Date: Sun, 09 Dec 2012 18:30:40 +0100
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On 07.12.2012 22:34, al-iyaz@xs4all.nl wrote:

> When plotting 3d points the plot is centered such that the bottom of
> the plot is in the center of the graph.

Actually, that only happens with 'set view equal'.  It's a side effect 
of conflicting goals.  In a nutshell, the thing that's supposed to 
rotate keeps changing shape while rotating.  That means there is not 
really any center of rotation --- because the behaviour in this case is 
not actually a rotation.

> By adding the following line of code to the do_3dplot function in
> graph3d.c the plot center becomes centered in the window :

>        zcenter3d =  -(ceiling_z - floor_z) / 2.0 * zscale3d + 1;

> Should I send this as a patch via the sourceforge page?

Yes, please.  An actual patch (i.e. the product of a diff -c original 
changed) would be good.