[yt-users] Problem in simple volume rendering

[Matthew Turk]

Hi Kuo-Chuan,

Sorry to hear it didn't work for you!  Do you think you could help us
out with a bit more information, and then we'll see if we can get it
working for you?

* What is the exact value of back_center that you find?
* What is the physical size of your domain?
* What is the width you supplied to the volume_rendering object?

It might also be easier if you could try it with the "Camera"
interface as described here:

http://yt.enzotools.org/doc/visualizing/volume_rendering.html#volume-rendering-camera

That should allow for a bit more flexibility in describing the scene,
and may help us narrow down the error.

Best wishes,

Matt

On Thu, Feb 24, 2011 at 5:12 AM, Kuo-Chuan Pan <kpan2 at astro.illinois.edu> wrote:
> Dear Sir/Madam,
>
> I am new in yt and trying to visualize my FLASH simulation data (3D) with volume rendering.
> I followed the cookbook in:
>
>    http://hg.enzotools.org/cookbook/raw-file/tip/recipes/simple_volume_rendering.py
>
> However I got an error message:
>
>  File "/home/kpan2/softwares/yt-x86_64/src/yt-hg/yt/visualization/volume_rendering/software_sampler.py", line 110, in ray_cast
>    LE = na.array(LE) - self.back_center
> ValueError: shape mismatch: objects cannot be broadcast to a single shape
>
> I looked the software_sampler.py file and found all LE, RE, self.bricks are empty lists ( = []), but self.back_center is not and correct.
> I guess there are some problems when setting self.bricks.
>
> If anyone has any suggestions, I would be very happy to hear.
> Thank you.
>
> Best regards,
> Kuo-Chuan
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