Don't chunk attributes

loompy/attribute_manager.py

@@ -153,13 +153,11 @@ def __setattr__(self, name: str, val: np.ndarray) -> None:
 				if self.ds._file[a].__contains__(name):
 					del self.ds._file[a + name]
 
-				chunk_size = min(values.shape[0], 1000)
 				self.ds._file.create_dataset(
 					a + name,
 					data=values,
 					dtype=h5py.special_dtype(vlen=str) if values.dtype == np.object_ else values.dtype,
 					maxshape=(values.shape[0], ) if len(values.shape) == 1 else (values.shape[0], None),
-					chunks=(chunk_size, ) if len(values.shape) == 1 else (chunk_size , 1),
 					fletcher32=False,
 					compression="gzip",
 					shuffle=False,

loompy/loompy.py

@@ -316,6 +316,7 @@ def add_columns(self, layers: Union[np.ndarray, Dict[str, np.ndarray], loompy.La
 				self.shape = (self.ra[k].shape[0], self.shape[1])
 			if len(self.ca) == 0:
 				for k, v in col_attrs.items():
+					v = np.array(v)
 					self.ca[k] = np.zeros(0, v.dtype)
 
 		layers_dict: Dict[str, np.ndarray] = {}
@@ -388,6 +389,7 @@ def add_columns(self, layers: Union[np.ndarray, Dict[str, np.ndarray], loompy.La
 			self.shape = (self.shape[0], n_cols)
 			todel = []
 			for key, vals in col_attrs.items():
+				vals = np.array(vals)
 				if vals.shape[1:] != self.col_attrs[key].shape[1:]:
 					logging.debug(f"Removing attribute {key} because shape {vals.shape} did not match existing shape {self.col_attrs[key].shape} beyond first dimension")
 					todel.append(key)