Remove mlab.bivariate_normal

dstansby · dstansby · commit acb6d03bf2f2 · 2018-09-19T18:01:41.000+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
@@ -16,4 +16,5 @@ in Matplotlib 2.2 has been removed. See below for a list:
 - `mlab.prctile_rank`
 - `mlab.center_matrix`
 - `mlab.rk4` (use scipy.integrate.ode instead)
+- `mlab.bivariate_normal`
 - `mlab.donothing_callback`
diff --git a/lib/matplotlib/mlab.py b/lib/matplotlib/mlab.py
@@ -1194,25 +1194,6 @@ def cohere(x, y, NFFT=256, Fs=2, detrend=detrend_none, window=window_hanning,
     return Cxy, f
 
 
-@cbook.deprecated('2.2')
-def bivariate_normal(X, Y, sigmax=1.0, sigmay=1.0,
-                     mux=0.0, muy=0.0, sigmaxy=0.0):
-    """
-    Bivariate Gaussian distribution for equal shape *X*, *Y*.
-
-    See `bivariate normal
-    <http://mathworld.wolfram.com/BivariateNormalDistribution.html>`_
-    at mathworld.
-    """
-    Xmu = X-mux
-    Ymu = Y-muy
-
-    rho = sigmaxy/(sigmax*sigmay)
-    z = Xmu**2/sigmax**2 + Ymu**2/sigmay**2 - 2*rho*Xmu*Ymu/(sigmax*sigmay)
-    denom = 2*np.pi*sigmax*sigmay*np.sqrt(1-rho**2)
-    return np.exp(-z/(2*(1-rho**2))) / denom
-
-
 @cbook.deprecated('2.2')
 def get_xyz_where(Z, Cond):
     """
diff --git a/lib/matplotlib/pylab.py b/lib/matplotlib/pylab.py
@@ -230,7 +230,7 @@
 ## We are still importing too many things from mlab; more cleanup is needed.
 
 from matplotlib.mlab import (
-    amap, base_repr, binary_repr, bivariate_normal, csv2rec,
+    amap, base_repr, binary_repr, csv2rec,
     demean, detrend, detrend_linear, detrend_mean, detrend_none, dist,
     dist_point_to_segment, distances_along_curve, exp_safe,
     fftsurr, frange, get_sparse_matrix, get_xyz_where, griddata,
