Fix some failures

AlexandreAbraham · AlexandreAbraham · commit c4de0478db70 · 2016-06-08T22:55:16.000+02:00
diff --git a/lib/mpl_toolkits/mplot3d/art3d.py b/lib/mpl_toolkits/mplot3d/art3d.py
@@ -233,7 +233,7 @@ def do_3d_projection(self, renderer):
         xys = np.reshape(xys.T, shape)
         segments_2d = xys[:, :, 0:2]
         LineCollection.set_segments(self, segments_2d)
-        minz = np.min(xys[:, :, 2])
+        minz = np.min(xys[:, :, 2]) if xys.size > 0 else 1e9
         return minz
 
     def draw(self, renderer, project=False):
@@ -262,7 +262,7 @@ def __init__(self, *args, **kwargs):
 
     def set_3d_properties(self, verts, zs=0, zdir='z'):
         verts = np.hstack([verts, np.ones((len(verts), 1)) * zs])
-        self._segment3d = juggle_axes_vec(verts, zdir)
+        self._segment3d = juggle_axes_vec(verts.T, zdir)
         self._facecolor3d = Patch.get_facecolor(self)
 
     def get_path(self):
diff --git a/lib/mpl_toolkits/mplot3d/axes3d.py b/lib/mpl_toolkits/mplot3d/axes3d.py
@@ -2340,11 +2340,11 @@ def bar(self, left, height, zs=0, zdir='z', *args, **kwargs):
             if 'alpha' in kwargs:
                 p.set_alpha(kwargs['alpha'])
 
-        verts = np.hstack([verts, np.asarray(verts_zs)[:, np.newaxis]])
+        verts = np.vstack([list(zip(*verts)), verts_zs])
 
-        xs, ys, verts_zs = art3d.juggle_axes_vec(verts.T, zdir)
+        xs, ys, verts_zs = art3d.juggle_axes_vec(verts, zdir)
         self.auto_scale_xyz(xs, ys, verts_zs, had_data)
-        
+
         return patches
 
     def bar3d(self, x, y, z, dx, dy, dz, color=None,
