Remove mlab.path_length

dstansby · dstansby · commit 8a7c90b4500f · 2018-09-29T11:05:06.000+01:00
diff --git a/doc/api/next_api_changes/2018-09-18-DS.rst b/doc/api/next_api_changes/2018-09-18-DS.rst
@@ -29,4 +29,5 @@ in Matplotlib 2.2 has been removed. See below for a list:
 - `mlab.fftsurr`
 - `mlab.offset_line`
 - `mlab.quad2cubic`
+- `mlab.path_length`
 - `mlab.donothing_callback`
diff --git a/lib/matplotlib/mlab.py b/lib/matplotlib/mlab.py
@@ -2857,16 +2857,3 @@ def distances_along_curve(X):
     """
     X = np.diff(X, axis=0)
     return vector_lengths(X, axis=1)
-
-
-@cbook.deprecated('2.2')
-def path_length(X):
-    """
-    Computes the distance travelled along a polygonal curve in *N* dimensions.
-
-    Where *X* is an *M* x *N* array or matrix.  Returns an array of
-    length *M* consisting of the distance along the curve at each point
-    (i.e., the rows of *X*).
-    """
-    X = distances_along_curve(X)
-    return np.concatenate((np.zeros(1), np.cumsum(X)))
diff --git a/lib/matplotlib/pylab.py b/lib/matplotlib/pylab.py
@@ -235,7 +235,7 @@
     frange,
     identity, inside_poly, is_closed_polygon, ispower2, isvector, l1norm,
     l2norm, log2, movavg, norm_flat,
-    path_length, poly_below, poly_between,
+    poly_below, poly_between,
     rec2csv, rec_append_fields, rec_drop_fields, rec_join, rms_flat,
     vector_lengths,
     window_hanning, window_none)
