enh: ensure all feature data objects have the dtype property

CHANGELOG

@@ -5,6 +5,7 @@
  - enh: got rid of for-loop in map_indices_parent2child (~100x speed-up)
  - enh: slight improvement of managing manual indices in hierarchy children
  - enh: added dtype properties for contour and trace events
+ - enh: ensure all feature data objects have the dtype property
  - ref: new submodule for hierarchy format
 0.56.3
  - fix: regression missing check for basin availability

dclab/rtdc_dataset/fmt_dict.py

@@ -78,6 +78,9 @@ def __init__(self, ddict, *args, **kwargs):
                     data = DictContourEvent(ddict[feat])
                 elif feat == "trace":
                     data = DictTraceEvent(ddict[feat])
+                elif isinstance(ddict[feat], list):
+                    # convert e.g. image data to arrays
+                    data = np.array(ddict[feat])
                 else:
                     data = ddict[feat]
             else:

dclab/rtdc_dataset/fmt_tdms/event_contour.py

@@ -58,6 +58,7 @@ def __init__(self, rtdc_dataset):
 
         self.event_offset = 0
         self._length = None
+        self.dtype = np.int16
 
     def __getitem__(self, idx):
         if not isinstance(idx, numbers.Integral):

dclab/rtdc_dataset/fmt_tdms/event_image.py

@@ -34,6 +34,7 @@ def __init__(self, rtdc_dataset):
         self.event_offset = int(conf["fmt_tdms"]["video frame offset"])
         self.video_file = fname
         self._shape = None
+        self.dtype = np.uint8
 
     def __getitem__(self, idx):
         if not isinstance(idx, numbers.Integral):

dclab/rtdc_dataset/fmt_tdms/event_mask.py

@@ -14,6 +14,7 @@ def __init__(self, rtdc_dataset):
         self.config = rtdc_dataset.config
         self._shape = None
         self._img_shape_cache = None
+        self.dtype = np.bool_
 
     def __getitem__(self, idx):
         if not isinstance(idx, numbers.Integral):

dclab/rtdc_dataset/fmt_tdms/event_trace.py

@@ -22,6 +22,7 @@ def __init__(self, rtdc_dataset):
         self._trace = None
         self.mname = rtdc_dataset.path
         self.identifier = self.mname
+        self.dtype = np.int16
 
     def __getitem__(self, trace_key):
         if trace_key not in dfn.FLUOR_TRACES: