FIX: brokenbarh math before units

jklymak · jklymak · commit 60264b21b86e · 2018-11-27T15:32:36.000-08:00
diff --git a/lib/matplotlib/axes/_axes.py b/lib/matplotlib/axes/_axes.py
@@ -2525,11 +2525,12 @@ def broken_barh(self, xranges, yrange, **kwargs):
         self._process_unit_info(xdata=xdata,
                                 ydata=ydata,
                                 kwargs=kwargs)
-        for nn, xr in xranges:
+        xnew = []
+        for xr in xranges:
             # convert the absolute values, not the x and dx...
-            xranges[nn] = [self.convert_xunits(xr[0]),
-                            self.convert_xunits(xr[0]+xr[1])]
-            xranges[nn][1] = xranges[nn][1] - xranges[nn][0]
+            xnew.append([self.convert_xunits(xr[0]),
+                         self.convert_xunits(xr[0]+xr[1])])
+            xnew[-1][1] = xnew[-1][1] - xnew[-1][0]
 
         yrange = self.convert_yunits(yrange)
 
