BUG: mplot3d: Don't crash if azim or elev are non-integral

Formatting these via a format string causes 'inf' or 'nan' to be displayed in the status bar, which is much better than crashing because the user tried to rotate.

Author: eric-wieser

lib/mpl_toolkits/mplot3d/axes3d.py

@@ -1169,7 +1169,8 @@ def format_coord(self, xd, yd):
             return ''
 
         if self.button_pressed in self._rotate_btn:
-            return 'azimuth=%d deg, elevation=%d deg ' % (self.azim, self.elev)
+            return 'azimuth={:.0f} deg, elevation={:.0f} deg '.format(
+                self.azim, self.elev)
             # ignore xd and yd and display angles instead
 
         # nearest edge