FIX: make sure all ticks show up for colorbar minor tick

jklymak · jklymak · commit ee1fb54c7205 · 2018-09-11T16:21:04.000-07:00
diff --git a/lib/matplotlib/colorbar.py b/lib/matplotlib/colorbar.py
@@ -267,7 +267,8 @@ def __call__(self):
         vmin = self._colorbar.norm.vmin
         vmax = self._colorbar.norm.vmax
         ticks = ticker.AutoMinorLocator.__call__(self)
-        return ticks[(ticks >= vmin) & (ticks <= vmax)]
+        rtol = (vmax - vmin) * 1e-10 
+        return ticks[(ticks >= vmin - rtol) & (ticks <= vmax + rtol)]
 
 
 class _ColorbarLogLocator(ticker.LogLocator):
