[yt-users] Problems with pickle

[Elizabeth Tasker]

(So e.g. trying to pickle disk data fails, but disk outer is fine)


On Mar 4, 2013, at 11:39 PM, Elizabeth Tasker <tasker at astro1.sci.hokudai.ac.jp> wrote:

> Just as an update to this problem:
> 
> It does stem from the fact that the data was a boolean object in its dim and distant past:
> 
> diskouter = pf.h.disk(na.array([16.0, 16.0, 16.0]), na.array([0.0,0.0,1.0]), 7.5, 100e-3/pf['kpc'])
> diskinner = pf.h.disk(na.array([16.0, 16.0, 16.0]), na.array([0.0,0.0,1.0]), 4.5, 100e-3/pf['kpc'])
> diskdata = pf.h.boolean([diskouter, "NOT", diskinner])
> .
> .
> .
> contours = diskdata.extract_connected_sets("Density", 1, cloud_threshold, maxv+1, log_space=True, cache=True)
> this_agglomeration = contours[1][0][a]
> .
> .
> .
> cloud = this_agglomeration.extract_region(agglomeration_peak_assign == p)
> .
> .
> .
> cPickle.dump(cloud, file, protocol=-1)
> 
> I also did a very old roll back and confirmed this isn't a new problem; I must have never tried to save an object that was at one point a boolean. Is there any way around this? (Apart from not using the boolean?)
> 
> Thanks!
> 
> Elizabeth
> 
> 
> On Mar 4, 2013, at 10:29 PM, Elizabeth Tasker <tasker at astro1.sci.hokudai.ac.jp> wrote:
> 
>> Hi Stephen,
>> 
>> That method gives me exactly the same error.
>> 
>> Either I'm doing something silly (quite probable) or perhaps there's been a change to this machinery since the last update?
>> 
>> Elizabeth
>> 
>> 
>> On Mar 4, 2013, at 10:18 PM, Stephen Skory <s at skory.us> wrote:
>> 
>>> Hi Elizabeth,
>>> 
>>>> I'm getting a problem with pickle that I've not seen before.
>>> 
>>> Have you tried save_object / load_object?
>>> 
>>> http://yt-project.org/doc/analyzing/objects.html#storing-and-loading-objects
>>> 
>>> --
>>> Stephen Skory
>>> s at skory.us
>>> http://stephenskory.com/
>>> 510.621.3687 (google voice)
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>> 
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>