[vtkusers] plot 3d points

[John Biddiscombe]

Already done this. Have a look at vtkPointSpriteMapper which can use 
Shaders or Point sprites (or just plain glPoint) to render fast spheres.

https://svn.cscs.ch/vtkContrib/trunk/vtkCSCS/

JB
also sparticles on
http://www.cscs.ch/a-display.php?id=170



Dominik Szczerba wrote:
> The best would be to write your own mapper displaying the point cloud as 
> glPoints. glPoints work very well for large N giving fast yet still nice poor 
> man's volume feel.
> --DS
>
> On Sunday 22 October 2006 22:16, Marty Humperdink wrote:
>   
>> I have several long lists of x,y,z coordinates that I
>> would like to plot in an efficient manner. After
>> searching the terms 'plot 3d points' in the mailing
>> list archive I came up with some suggestions and
>> implemented one using vtkGlyph3d and vtkSphereSource.
>> Its very slow, though, and can crash with too many
>> points (>2000).
>>
>> I'm looking for a way to plot this x,y,z coordinate
>> data quickly. I can do what I want in Matlab/Octave
>> using the command:
>>
>> plot3(ptsX,ptsY,ptsZ,'b.')
>>
>> where ptsX, ptsY, and ptsZ are the coordinates 'b.'
>> indicates that I want a small blue dot as the point
>> marker.
>>
>> Can someone please make a suggestion? I realize that
>> this is a rudimentary question and I'm having trouble
>> probably because I don't fully understand VTK data
>> representation but would very much appreciate someone
>> pointing me in the right direction.
>>
>> Thanks
>> Marty
>>
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>   


-- 
John Biddiscombe,                            email:biddisco @ cscs.ch
http://www.cscs.ch/about/BJohn.php
CSCS, Swiss National Supercomputing Centre  | Tel:  +41 (91) 610.82.07
Via Cantonale, 6928 Manno, Switzerland      | Fax:  +41 (91) 610.82.82