Remove mlab.vector_lengths

dstansby · dstansby · commit b2566e5d7646 · 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
@@ -29,6 +29,7 @@ in Matplotlib 2.2 has been removed. See below for a list:
 - `mlab.fftsurr`
 - `mlab.offset_line`
 - `mlab.quad2cubic`
+- `mlab.vector_lengths`
 - `mlab.distances_along_curve`
 - `mlab.path_length`
 - `mlab.donothing_callback`
diff --git a/lib/matplotlib/mlab.py b/lib/matplotlib/mlab.py
@@ -2826,21 +2826,3 @@ def cross_from_above(x, threshold):
         return ind+1
     else:
         return ind
-
-
-##################################################
-# Vector and path length geometry calculations
-##################################################
-@cbook.deprecated('2.2')
-def vector_lengths(X, P=2., axis=None):
-    """
-    Finds the length of a set of vectors in *n* dimensions.  This is
-    like the :func:`numpy.norm` function for vectors, but has the ability to
-    work over a particular axis of the supplied array or matrix.
-
-    Computes ``(sum((x_i)^P))^(1/P)`` for each ``{x_i}`` being the
-    elements of *X* along the given axis.  If *axis* is *None*,
-    compute over all elements of *X*.
-    """
-    X = np.asarray(X)
-    return (np.sum(X**(P), axis=axis))**(1./P)
diff --git a/lib/matplotlib/pylab.py b/lib/matplotlib/pylab.py
@@ -237,7 +237,6 @@
     l2norm, log2, movavg, norm_flat,
     poly_below, poly_between,
     rec2csv, rec_append_fields, rec_drop_fields, rec_join, rms_flat,
-    vector_lengths,
     window_hanning, window_none)
 
 from matplotlib import cbook, mlab, pyplot as plt
