[yt-users] Camera & HomogenizedVolume
Stella Offner
soffner at cfa.harvard.edu
Tue Nov 23 13:30:38 PST 2010
Hi Matt,
Thanks, again! Now a new error: I called camera with a log_fields
argument, but it seems that kd tree code does not recognize this.
Sadly, if I bi-pass this by not using the log field, the code seg
faults right after 'About to cast'. This last thing could just be my
script. Anyway, I'm using the latest, rather than the stable version,
which maybe I should use instead.
AttributeError Traceback (most recent call
last)
/n/home05/soffner/yt-x86_64/src/yt-hg/scripts/iyt in <module>()
140 cam.zoom(1.0)
141 #take a picture
--> 142 vals = cam.snapshot()
143 max = vals.max()
144 print "Max= ", max, "Min= ", vals.min()
/n/home05/soffner/yt-x86_64/src/yt-hg/yt/visualization/
volume_rendering/camera.pyc in snapshot(self, fn)
324 tfp = TransferFunctionProxy(self.transfer_function) #
Reset it every time
325 tfp.ns = self.sub_samples
--> 326 self.volume.initialize_source()
327 if self.use_kd:
328 self.volume.reset_cast()
/n/home05/soffner/yt-x86_64/src/yt-hg/yt/utilities/amr_kdtree/
amr_kdtree.pyc in initialize_source(self)
773 def initialize_source(self):
774 if self.tree_type is 'domain':
--> 775 self.get_bricks()
776
777 def kd_ray_cast(self,image, tfp, vector_plane,
back_center, front_center):
/n/home05/soffner/yt-x86_64/src/yt-hg/yt/utilities/amr_kdtree/
amr_kdtree.pyc in get_bricks(self)
345 for i,field in enumerate(self.fields):
346 vcd =
current_node
['grid
'].get_vertex_centered_data
(field,smoothed=True,no_ghost=self.no_ghost).astype('float64')
--> 347 if self.log_field[i]: vcd = na.log10(vcd)
348 dds.append(vcd)
349
current_saved_grids.append(current_node['grid'])
AttributeError: 'AMRKDTree' object has no attribute 'log_field'
WARNING: Failure executing file: </n/home05/soffner/ytorionlib/
ytwindmovie.py>
On Nov 23, 2010, at 3:51 PM, Matthew Turk wrote:
> Hi Stella,
>
> You're right, that code was not using the correct parameters. I have
> corrected it and pushed a new changeset.
>
> -Matt
>
> PS For what it's worth, this doesn't seem to be related to Mike's
> problem from the other thread, which I will defer to the author of the
> amr_kdtree module, Sam Skillman. :)
>
> On Tue, Nov 23, 2010 at 3:49 PM, Stella Offner <soffner at cfa.harvard.edu
> > wrote:
>> Hi Matt,
>>
>> Thanks! That got me past the camera-specific error. However, I am
>> running
>> into an error in amr_kdtree, which has a call in the old form to
>> pf['DomainLeftEdge']:
>>
>> KeyError Traceback (most recent
>> call last)
>>
>> /n/home05/soffner/yt-x86_64/src/yt-hg/scripts/iyt in <module>()
>> 135 cam = pf.h.camera(c, L, W, (Nvec,Nvec),
>> 136 transfer_function = tf, pf = pf,
>> fields=["log_den"],
>> --> 137 north_vector = north)
>> 138 cam.zoom(1.0)
>> 139 #take a picture
>>
>> /n/home05/soffner/yt-x86_64/src/yt-hg/yt/visualization/
>> volume_rendering/camera.pyc
>> in __init__(self, center, normal_vector, width, resolution,
>> transfer_function, north_vector, steady_north, volume, fields,
>> log_fields,
>> sub_samples, pf, use_kd, l_max, no_ghost, tree_type)
>> 193 if self.use_kd:
>> 194 volume = AMRKDTree(self.pf, l_max=l_max,
>> fields=self.fields, no_ghost=no_ghost, tree_type=tree_type,
>> --> 195 log_fields = log_fields)
>> 196 else:
>> 197 volume = HomogenizedVolume(fields, pf =
>> self.pf,
>>
>> /n/home05/soffner/yt-x86_64/src/yt-hg/yt/utilities/amr_kdtree/
>> amr_kdtree.pyc
>> in __init__(self, pf, l_max, le, re, fields, no_ghost, tree_type,
>> log_fields)
>> 271
>> 272 if le is None:
>> --> 273 self.domain_left_edge = pf['DomainLeftEdge']
>> 274 else:
>> 275 self.domain_left_edge = le
>>
>> /n/home05/soffner/yt-x86_64/src/yt-hg/yt/data_objects/
>> static_output.pyc in
>> __getitem__(self, key)
>> 113 self.conversion_factors]:
>> 114 if key in d: return d[key]
>> --> 115 raise KeyError(key)
>> 116
>> 117 def keys(self):
>>
>> KeyError: 'DomainLeftEdge'
>> WARNING: Failure executing file:
>> </n/home05/soffner/ytorionlib/ytwindmovie.py>
>>
>>
>> On Nov 23, 2010, at 3:32 PM, Matthew Turk wrote:
>>
>>> Hi Stella,
>>>
>>> I've just pushed a change to include Camera and HomogenizedVolume in
>>> the yt.mods import. I also wanted to note that you can get a camera
>>> by doing:
>>>
>>> pf.h.camera
>>>
>>> and that I think unless you're doing something clever, you may no
>>> longer need to generate a HomogenizedVolume by hand. I think by
>>> default Camera will use the kD-tree, now, so you should be set just
>>> specifying the parameters for the rendering to pf.h.camera, and not
>>> the volume itself.
>>>
>>> Let me know if you run into any more problems!
>>>
>>> -Matt
>>>
>>> On Tue, Nov 23, 2010 at 3:28 PM, Stella Offner <soffner at cfa.harvard.edu
>>> >
>>> wrote:
>>>>
>>>> Hi,
>>>>
>>>> I updated yt to the new release, and now I'm getting 'NameError:
>>>> name
>>>> 'Camera' is not defined' for Camera and HomogenizedVolume (these
>>>> were
>>>> both
>>>> part of the volume_rendering extension previously). Did these get
>>>> renamed
>>>> or
>>>> do I need to import something else?
>>>>
>>>> Thanks!
>>>> Stella
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