Re: Volume visualization strangeness

I ran into the same when developing my software.  My solution
is to resample the data to a cubic resolution.  I've found
that cubes larger than 128 x 128 x 128 simply take too much
memory, so my application caps things there.

In your case, I'd suggest resampling to 32 x 32 x 32 and
61 x 61 x 61, respectively.  Of course, it will use more
memory, but things will look much smoother.

As for the aspect ratio, I haven't experimented with that,
but my guess is that it will not solve your problem.  If you
try it, though, feel free to share your experiences.


At 02:44 PM 2/13/2003, you wrote:
>As a matter of fact, the z face does indeed have fewer samples--one data file 
>is 32 x 32 x 16 and the other is 61 x 61 x 5.
>If I set the aspect ratio of the display to better match the sampling, will 
>VisAD do a better job with the volume rendering? Thanks!
>Curtis Rueden wrote:
>>Hi John,
>>Do your volume's samples form a cube (e.g., 64 x 64 x 64),
>>or does the z-face have fewer samples?  VisAD's volume
>>rendering performs less well with uneven sample lengths,
>>such as 512 x 512 x 5.

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