[yt-users] Error saving clumps to the data file

[Andrew Myers]

Dear yt users,

I've generated some clumps, and would like to save them to look at later.
When I try

pf.h.save_object(master_clump, 'Clumps')

I get the following error, which looks like it's coming fron hdf5. Has
anybody seen this before?

Thanks,
Andrew

---------------------------------------------------------------------------ValueError
                               Traceback (most recent call
last)<ipython-input-13-0bda0f3d0b42> in <module>()----> 1
pf.h.save_object(master_clump, 'Clumps')
/indirect/o/atmyers/yt-x86_64/src/yt-hg/yt/data_objects/hierarchy.pyc
in save_object(self, obj, name)    299         """    300         s =
cPickle.dumps(obj, protocol=-1)--> 301         self.save_data(s,
"/Objects", name, force = True)    302     303     def
load_object(self, name):
/indirect/o/atmyers/yt-x86_64/src/yt-hg/yt/data_objects/hierarchy.pyc
in _save_data(self, array, node, name, set_attr, force, passthrough)
 274         for q in node.split('/'):    275             if q:
myGroup = myGroup.require_group(q)--> 276         arr =
myGroup.create_dataset(name,data=array)    277         if set_attr is
not None:    278             for i, j in set_attr.items():
arr.attrs[i] = j
/o/atmyers/yt-x86_64/lib/python2.7/site-packages/h5py/_hl/group.pyc in
create_dataset(self, name, shape, dtype, data, **kwds)     69
"""     70 ---> 71         dsid = dataset.make_new_dset(self, shape,
dtype, data, **kwds)     72         dset = dataset.Dataset(dsid)
73         if name is not None:
/o/atmyers/yt-x86_64/lib/python2.7/site-packages/h5py/_hl/dataset.pyc
in make_new_dset(parent, shape, dtype, data, chunks, compression,
shuffle, fletcher32, maxshape, compression_opts, fillvalue)     92
 93     if data is not None:---> 94         dset_id.write(h5s.ALL,
h5s.ALL, data)     95      96     return dset_id
/o/atmyers/yt-x86_64/lib/python2.7/site-packages/h5py/h5d.so in
h5py.h5d.DatasetID.write (h5py/h5d.c:2866)()
/o/atmyers/yt-x86_64/lib/python2.7/site-packages/h5py/_proxy.so in
h5py._proxy.dset_rw (h5py/_proxy.c:1766)()
/o/atmyers/yt-x86_64/lib/python2.7/site-packages/h5py/defs.so in
h5py.defs.H5Tconvert (h5py/defs.c:18439)()
/o/atmyers/yt-x86_64/lib/python2.7/site-packages/h5py/_errors.so in
h5py._errors.set_exception (h5py/_errors.c:711)()
/o/atmyers/yt-x86_64/lib/python2.7/site-packages/h5py/_conv.so in
h5py._conv.str2vlen (h5py/_conv.c:3382)()
/o/atmyers/yt-x86_64/lib/python2.7/site-packages/h5py/_conv.so in
h5py._conv.generic_converter (h5py/_conv.c:1302)()
/o/atmyers/yt-x86_64/lib/python2.7/site-packages/h5py/_conv.so in
h5py._conv.conv_str2vlen (h5py/_conv.c:2158)()
ValueError: VLEN strings do not support embedded NULLs
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