I also tried switching out pickle for the yt method of storing objects. Unfortunately, it doesn't seem to save the object I want. I tried: contours = dd.extract_connected_sets("NegEscapeVelocity", 1, 30.0, maxv, log_space=False) contours.save_object("cloudcores", "storedcores.cpkl") In [1]: contours.save_object("cloudcores", "storedcores.cpkl") --------------------------------------------------------------------------- AttributeError Traceback (most recent call last) /home/tasker/yt/src/yt-hg/scripts/iyt in <module>() ----> 1 2 3 4 5 AttributeError: 'tuple' object has no attribute 'save_object' The alternative method --of saving it via the hierarchy-- is slightly less good since I'm running multiple yt scripts on the same data set. (As least, when I tried to load the values back in, it produced an empty set which I presume was because I'd inadvertently overwritten the .yt file?). If I could get one of these working again, then I'd be super happy. I don't need the all :) Elizabeth On 1 December 2011 12:35, Elizabeth Tasker <tasker@astro1.sci.hokudai.ac.jp> wrote:
Hi Matt,
Sorry, that still doesn't work.... unless I've misunderstood your suggestion? The code is here:
http://paste.yt-project.org/show/1974/
Pickle + unpickle on a pile of properties I calculate from the connected sets is fine, but pickling the connected sets themselves is a problem. Could it be the later pickle doesn't require the parameter file? Or is it possible there is an unrelated write error happening?
Elizabeth
On 30 November 2011 23:43, Matthew Turk <matthewturk@gmail.com> wrote:
Hi Elizabeth,
We recently changed the mechanism of storing parameter files to be off-by-default, which means that rather than dumping them to a .csv file, they only stay in memory. This functionality can be turned back on (this change is documented in the development documentation.) Can you try:
1) Loading your parameter file, *then* loading your pickle. I am optimistic this will fix it. 2) If it doesn't, at the very top of your python script, put this:
from yt.config import ytcfg; ytcfg["yt","storeparameterfiles"] = "True"
-Matt
On Wed, Nov 30, 2011 at 4:46 AM, Elizabeth Tasker <tasker@astro1.sci.hokudai.ac.jp> wrote:
Hi,
A bigger problem....
The lastest version of yt
The current version of the code is:
--- a519b8754ba8 (yt) tip ---
has problems with pickle. If I pickle a data set and then try and unpickle it, I see:
unpickle core data --------------------------------------------------------------------------- KeyError Traceback (most recent call last)
/home/tasker/yt/src/yt-hg/scripts/iyt in <module>() 338 339 #file = open('cores.pickle','rb') --> 340 allcloudcores = cPickle.load(file('cores.pickle', 'rb')) 341 file.close() 342
/home/tasker/yt/src/yt-hg/yt/data_objects/data_containers.pyc in _reconstruct_object(*args, **kwargs) 3676 else: new_args.append(arg) 3677 pfs = ParameterFileStore() -> 3678 pf = pfs.get_pf_hash(pfid) 3679 cls = getattr(pf.h, dtype) 3680 obj = cls(*new_args)
/home/tasker/yt/src/yt-hg/yt/utilities/parameter_file_storage.pyc in get_pf_hash(self, hash) 106 def get_pf_hash(self, hash): 107 """ This returns a parameter file based on a hash. """ --> 108 return self._convert_pf(self._records[hash]) 109 110 def get_pf_ctid(self, ctid):
KeyError: (('283b7c4d88671dbff7acf083098da6ae',), <function _reconstruct_object at 0x272c938>, ('283b7c4d88671dbff7acf083098da6ae', 'region', array([ 16., 16., 16.]), array([ 0., 0., 0.]), array([ 32., 32., 32.]), {'disk_center': array([16, 16, 16]), 'center': array([ 16., 16., 16.]), 'bulk_velocity': array([ 0., 0., 0.]), 'disk_vector': array([0, 0, 1]), 'disk_radius': array([ 0.1 , 0.1358, 0.1716, 0.2074, 0.2432, 0.279 ,
The fact it mentions the field parameters in the last line, might mean it's an error introduced because of the corrections to them (that I have been demanding!)?
The script I have works fine (pickles and all) on yt version:
--- 16e8d749a806 (yt) tip ---
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