MNT: correct spelling of sentinel

tacaswell · tacaswell · commit b0b4709c1ad3 · 2020-03-01T23:37:25.000-05:00
diff --git a/lib/matplotlib/figure.py b/lib/matplotlib/figure.py
@@ -1577,7 +1577,7 @@ def subplots(self, nrows=1, ncols=1, sharex=False, sharey=False,
             return axarr
 
     def build_grid(self, layout, *, subplot_kw=None, gridspec_kw=None,
-                   empty_sentinal=None):
+                   empty_sentinel=None):
         """Build a layout based on an grid of strings.
 
         This is a helper function to build complex GridSpec layouts visually.
@@ -1609,7 +1609,7 @@ def build_grid(self, layout, *, subplot_kw=None, gridspec_kw=None,
             `~matplotlib.gridspec.GridSpec` constructor used to create
             the grid the subplots are placed on.
 
-        empty_sentinal : object, optional
+        empty_sentinel : object, optional
             Entry in the layout to mean "leave this space empty"
 
 
@@ -1627,7 +1627,7 @@ def _process_layout(layout):
             nested = {}
             for j, row in enumerate(layout):
                 for k, v in enumerate(row):
-                    if v == empty_sentinal:
+                    if v == empty_sentinel:
                         continue
                     elif isinstance(v, (int, str, Axes)):
                         unique_ids.add(v)
@@ -1641,7 +1641,7 @@ def _do_layout(gs, layout, unique_ids, nested):
             covered = np.zeros((rows, cols), dtype=bool)
             output = dict()
 
-            for j, k in np.argwhere(layout == empty_sentinal):
+            for j, k in np.argwhere(layout == empty_sentinel):
                 covered[j, k] = True
 
             for name in unique_ids:
@@ -1652,7 +1652,7 @@ def _do_layout(gs, layout, unique_ids, nested):
                 if np.any(covered[slc]):
                     raise ValueError
                 covered[slc] = True
-                if name == empty_sentinal:
+                if name == empty_sentinel:
                     continue
 
                 if hasattr(name, 'set_subplotspec'):
