ChannelIndex.channel_names is now 'U' instead of 'S'

Author: samuelgarcia

neo/core/channelindex.py

@@ -152,7 +152,7 @@ class ChannelIndex(Container):
     _data_child_objects = ('AnalogSignal', 'IrregularlySampledSignal')
     _single_parent_objects = ('Block',)
     _necessary_attrs = (('index', np.ndarray, 1, np.dtype('i')),)
-    _recommended_attrs = ((('channel_names', np.ndarray, 1, np.dtype('S')),
+    _recommended_attrs = ((('channel_names', np.ndarray, 1, np.dtype('U')),
                            ('channel_ids', np.ndarray, 1, np.dtype('i')),
                            ('coordinates', pq.Quantity, 2)) +
                           Container._recommended_attrs)
@@ -173,7 +173,7 @@ def __init__(self, index, channel_names=None, channel_ids=None,
 
         # Defaults
         if channel_names is None:
-            channel_names = np.array([], dtype='S')
+            channel_names = np.array([], dtype='U')
         if channel_ids is None:
             channel_ids = np.array([], dtype='i')
 

neo/io/basefromrawio.py

@@ -139,7 +139,7 @@ def read_block(self, block_index=0, lazy=False, signal_group_mode=None,
                     chidx_annotations.pop('name')
                 chidx_annotations = check_annotations(chidx_annotations)
                 # this should be done with array_annotation soon:
-                ch_names = all_channels[ind_abs]['name'].astype('S')
+                ch_names = all_channels[ind_abs]['name'].astype('U')
                 neo_channel_index = ChannelIndex(index=ind_within,
                                                  channel_names=ch_names,
                                                  channel_ids=all_channels[ind_abs]['id'],