Re: Visualization of a list of 3D points coordinates with a perspective
- To: mathgroup at smc.vnet.net
- Subject: [mg89307] Re: Visualization of a list of 3D points coordinates with a perspective
- From: dh <dh at metrohm.ch>
- Date: Thu, 5 Jun 2008 00:42:37 -0400 (EDT)
- References: <g25nta$hu5$1@smc.vnet.net>
Hi Alexei,
simply create a sphere with a suitable size at your data points.E.g.:
lst={{3.30414,-2.86064,-2.54648},{4.06572,3.80403,1.68897},{-1.72822,-2.03097,-4.1024}};
Show[Graphics3D[Sphere[#,1/#[[2]]]&/@lst],Axes->True]
hope this helps, Daniel
Alexei Boulbitch wrote:
> Dear MathGroup members,
>
> I have a list containing 3D coordinates of a number of points, like this one
> lst={{3.30414, -2.86064, -2.54648}, {4.06572, 3.80403,
> 1.68897}, {-1.72822, -2.03097, -4.1024}, ...}
>
> I would like to visualize them by plotting them. To plot them as a set
> of points may be trivially done by say, ListPointPlot3D. Alternatively,
> it may be visualized as a set of spheres with unit radius and centered
> in the points specified by the list, e.g. in the point {3.30414,
> -2.86064, -2.54648}, in {4.06572, 3.80403, 1.68897} etc.
>
> Now comes the question. I would like to do it in such a way that the
> size (and may be the color) of each point or sphere would depend upon
> one of the coordinates (say, y). In other words, the size and the of the
> first point specified by lst with y=-2.86064 would be smaller than that
> of the second point that has y=3.80403. The color or darkness may also
> depend upon y. This would give a feeling of a perspective.
>
> Do you have an idea of how to do this?
>
> Best, Alexei
>
--
Daniel Huber
Metrohm Ltd.
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CH-9100 Herisau
Tel. +41 71 353 8585, Fax +41 71 353 8907
E-Mail:<mailto:dh at metrohm.com>
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