minor comments

src/napari_stitcher/_loader_widget.py

@@ -102,7 +102,7 @@ def get_tiles_pos(self):
         """
 
         # get mosaic parameters assuming all tiles have the same size
-        l0 = self.viewer.layers[0]
+        l0 = self.viewer.layers[0] # !!! add a test if all layers dont have the same size
         #dims = viewer_utils.get_layer_dims(l0, self.viewer)
         #sdims = [dim for dim in dims if dim in ['x', 'y', 'z']]  # spatial dimensions
         # for now get tile size assuming that y and x are the last dimensions

src/napari_stitcher/_stitcher_widget.py

@@ -377,6 +377,8 @@ def load_metadata(self):
             self.times_slider.min = -1
             self.times_slider.max = len(reference_sim.coords['t']) - 1
             self.times_slider.value = self.times_slider.min, self.times_slider.max
+        else:
+            print('No time dimension in data')
 
         if 'c' in reference_sim.coords.keys():
             self.reg_ch_picker.enabled = True