[yt-users] Problem with volume rendering

[Sam Skillman]

Hi Joshua,

Upon looking into this with a test RAMSES dataset, I think something is
actually broken in the AMRKDTree construction used to create
single-resolution tiles of the domain for RAMSES.  I'm going to file an
issue and assign it to me.

Sam


On Tue, Feb 25, 2014 at 9:45 AM, Sam Skillman <samskillman at gmail.com> wrote:

> Hi Joshua,
>
> The "Failed to split grids" are probably (maybe) okay. I haven't rendered
> ramses data in quite a while, but I think the kd-tree is probably just
> finding a corner case that I didn't have a better way to cover than just
> move on.
>
> The progress bar error is a bit stranger, though I've also recently had
> issues with it in ipython that I don't understand. Could you paste the full
> traceback using http://paste.yt-project.org/ ?  That will make it easier
> to pick a spot to place a try-except for now.
>
> Sam
>
>
> On Mon, Feb 24, 2014 at 6:05 AM, Joshua G. Albert <
> albert at strw.leidenuniv.nl> wrote:
>
>> Hello,
>>
>> Attn: Sam Skillman (Matthew thinks you might know a solution)
>>
>> I'm attempting to follow the Simple Volume Rendering recipe given in the
>> cookbook (http://yt-project.org/doc/cookbook/simple_plots.html#
>> Simple_Volume_Rendering). I'm using Ramses simulation output and after
>> consulting Matthew Turk it should be fine, using the bleeding edge version,
>> which I am. My code that fails is:
>>
>> pf = load(header)
>> dd = pf.h.all_data()
>> mi,ma = dd.quantities['Extrema']('Density')[0]
>> tf = ColorTransferFunction((np.log10(mi)+1,np.log10(ma)))
>> tf.add_layers(5,w=0.02)
>> center=pf.domain_center
>> look = [0.0,0.0,-1.0]
>> width = 1.0
>> res = 512
>> cam = pf.h.camera(center,look,width,res,tf)
>> cam.snapshot("%s_test_snap.png" % pf, clip_ratio=8.0)
>> #Something fails in the progressbar of all places!
>>
>> I get a series of "Failed to split grids."
>>
>> It fails at snapshot, and at the end of the traceback I find:
>>
>> /data2/albert/ramses/yt-x86_64/src/yt-hg/yt/extern/progressbar/widgets.pyc
>> in update_js(self, pbar)
>>     344             $myPB.progressbar({{value: 0, max: {pbar.maxval:d}}});
>>     345         }}
>> --> 346         """.format(divid=self.uuid, pbar=pbar)
>>     347
>>     348
>>
>> ValueError: Unknown format code 'd' for object of type 'float'
>>
>> Any idea how to solve this easily? Possibly a good idea to optionally
>> remove the progressbar in the future?
>>
>> --
>> Best Regards,
>>
>> Joshua G. Albert
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>> yt-users at lists.spacepope.org
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>>
>
>
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