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Re: 3d plot projection
From: |
Ben Abbott |
Subject: |
Re: 3d plot projection |
Date: |
Mon, 23 Apr 2012 13:57:26 -0400 |
On Apr 23, 2012, at 12:29 PM, willi k wrote:
> Dear all,
> I want to visualize some 3D shapes in a box (see pictures), but when I
> change the view from [0,0] to a more 3-dimensional view angle, the
> projection gets messed up.
>
> The first picture is after application of:
> set(gca,"view",[0,0])
> the second after application of:
> set(gca,"view",[0,.00000001]).
> But in both cases the black shape should stay approximately round!
>
> Is it possible to change the projection (couldn't find anything), or use
> another backend to get rid of this deformation?
>
> I'm using octave 3.6.1 with Gnuplot Version 4.4 patchlevel 2 on ubuntu
> 10.04
>
> best regards
> Willi
>
It sounds like you're trouble with gnuplot's approximation for hidden-line
removal.
Please try Octave's native OpenGL backend instead. Start with ...
close all
graphics_backend fltk
... and then try your plots.
Ben