Miscellaneous minor bug fixes (#2346)

holoviews/core/traversal.py

@@ -72,7 +72,7 @@ def unique_dimkeys(obj, default_dim='Frame'):
                 for d, k in zip(dims, key):
                     dim_keys[d.name] = k
         if dim_keys:
-            keys = [tuple(dim_keys[dim.name] for dim in dimensions)]
+            keys = [tuple(dim_keys.get(dim.name) for dim in dimensions)]
         else:
             keys = []
         return merge_dimensions(dim_groups), keys

holoviews/element/stats.py

@@ -75,7 +75,7 @@ def dframe(self, dimensions=None):
             dimensions = [self.get_dimension(d, strict=True) for d in dimensions
                           if d in dimensions.kdims]
         else:
-            dimensions = dimensions.kdims
+            dimensions = self.kdims
         return self.interface.dframe(self, dimensions)
 
 

holoviews/element/util.py

@@ -229,6 +229,8 @@ def circular_layout(nodes):
     Lay out nodes on a circle and add node index.
     """
     N = len(nodes)
+    if not N:
+        return ([], [], [])
     circ = np.pi/N*np.arange(N)*2
     x = np.cos(circ)
     y = np.sin(circ)

holoviews/plotting/bokeh/callbacks.py

@@ -129,7 +129,8 @@ def _init_plot_handles(self):
                 requested[h] = handles[h]
             elif h in self.extra_models:
                 print("Warning %s could not find the %s model. "
-                      "The corresponding stream may not work.")
+                      "The corresponding stream may not work."
+                      % (type(self).__name__, h))
         self.handle_ids.update(self._get_stream_handle_ids(requested))
 
         return requested

holoviews/plotting/bokeh/stats.py

@@ -167,6 +167,7 @@ def get_data(self, element, ranges, style):
 
             # Compute statistics
             vals = g.dimension_values(g.vdims[0])
+            vals = vals[np.isfinite(vals)]
             if len(vals):
                 q1, q2, q3 = (np.percentile(vals, q=q)
                               for q in range(25, 100, 25))
@@ -322,6 +323,7 @@ def _kde_data(self, el, key, **kwargs):
 
         bars, segments, scatter = defaultdict(list), defaultdict(list), {}
         values = el.dimension_values(vdim)
+        values = values[np.isfinite(values)]
         if self.inner == 'quartiles':
             for stat_fn in self._stat_fns:
                 stat = stat_fn(values)