Remove copy of less_simple_linear_interpolation

dstansby · dstansby · commit 104e73a12cfe · 2018-02-02T15:32:31.000Z
diff --git a/lib/matplotlib/cbook/__init__.py b/lib/matplotlib/cbook/__init__.py
@@ -1594,48 +1594,6 @@ def simple_linear_interpolation(a, steps):
             .reshape((len(x),) + a.shape[1:]))
 
 
-def less_simple_linear_interpolation(x, y, xi, extrap=False):
-    """
-    This function provides simple (but somewhat less so than
-    :func:`cbook.simple_linear_interpolation`) linear interpolation.
-    :func:`simple_linear_interpolation` will give a list of point
-    between a start and an end, while this does true linear
-    interpolation at an arbitrary set of points.
-
-    This is very inefficient linear interpolation meant to be used
-    only for a small number of points in relatively non-intensive use
-    cases.  For real linear interpolation, use scipy.
-    """
-    x = np.asarray(x)
-    y = np.asarray(y)
-    xi = np.atleast_1d(xi)
-
-    s = list(y.shape)
-    s[0] = len(xi)
-    yi = np.tile(np.nan, s)
-
-    for ii, xx in enumerate(xi):
-        bb = x == xx
-        if np.any(bb):
-            jj, = np.nonzero(bb)
-            yi[ii] = y[jj[0]]
-        elif xx < x[0]:
-            if extrap:
-                yi[ii] = y[0]
-        elif xx > x[-1]:
-            if extrap:
-                yi[ii] = y[-1]
-        else:
-            jj, = np.nonzero(x < xx)
-            jj = max(jj)
-
-            yi[ii] = (y[jj] +
-                      (xx - x[jj]) / (x[jj + 1] - x[jj]) *
-                                     (y[jj + 1] - y[jj]))
-
-    return yi
-
-
 @deprecated('2.1', alternative='shutil.rmtree')
 def recursive_remove(path):
     if os.path.isdir(path):
