FIX: change to interval_contains_close

jklymak · jklymak · commit 2b4887b469b4 · 2018-10-20T09:18:21.000-07:00
diff --git a/lib/matplotlib/axis.py b/lib/matplotlib/axis.py
@@ -1051,8 +1051,7 @@ def _update_ticks(self, renderer):
                 loct = None
                 continue
             if ((loct is None) or
-                    (not mtransforms.interval_contains(inter,
-                                                       loct, rtol=1e-10))):
+                    (not mtransforms.interval_contains_close(inter, loct))):
                 continue
             ticks_to_draw.append(tick)
 
diff --git a/lib/matplotlib/transforms.py b/lib/matplotlib/transforms.py
@@ -2892,10 +2892,33 @@ def nonsingular(vmin, vmax, expander=0.001, tiny=1e-15, increasing=True):
     return vmin, vmax
 
 
-def interval_contains(interval, val, rtol=0):
+def interval_contains(interval, val):
     """
     Check, inclusively, whether an interval includes a given value.
 
+    Parameters
+    ----------
+    interval : sequence of scalar
+        A 2-length sequence, endpoints that define the interval.
+    val : scalar
+        Value to check is within interval.
+
+    Returns
+    -------
+    bool
+        Returns true if given val is within the interval (with tolerance)
+    """
+    a, b = interval
+    if a > b:
+        a, b = b, a
+    return a <= val <= b
+
+
+def interval_contains_close(interval, val, rtol=1e-10):
+    """
+    Check, inclusively, whether an interval includes a given value, with the
+    interval expanded by a small tolerance to admit floating point errors.  
+
     Parameters
     ----------
     interval : sequence of scalar
@@ -2904,7 +2927,7 @@ def interval_contains(interval, val, rtol=0):
         Value to check is within interval.
     rtol : scalar
         Tolerance slippage allowed outside of this interval.  Default
-        0 * (b - a).
+        1e-10 * (b - a).
 
     Returns
     -------
