I am having trouble storing a numpy csr_matrix with PyTables. I'm getting this error:
TypeError: objects of type ``csr_matrix`` are not supported in this context, sorry; supported objects are: NumPy array, record or scalar; homogeneous list or tuple, integer, float, complex or string
My code:
f = tables.openFile(path,'w')
atom = tables.Atom.from_dtype(self.count_vector.dtype)
ds = f.createCArray(f.root, 'count', atom, self.count_vector.shape)
ds[:] = self.count_vector
f.close()
Any ideas?
Thanks
A CSR matrix can be fully reconstructed from its data
, indices
and indptr
attributes. These are just regular numpy arrays, so there should be no problem storing them as 3 separate arrays in pytables, then passing them back to the constructor of csr_matrix
. See the scipy docs.
Edit: Pietro's answer has pointed out that the shape
member should also be stored