diff options
| -rw-r--r-- | src/python/gudhi/barycenter.py | 58 |
1 files changed, 0 insertions, 58 deletions
diff --git a/src/python/gudhi/barycenter.py b/src/python/gudhi/barycenter.py index c2173dba..11098afe 100644 --- a/src/python/gudhi/barycenter.py +++ b/src/python/gudhi/barycenter.py @@ -225,61 +225,3 @@ def lagrangian_barycenter(pdiagset, init=None, verbose=False): else: return Y -def _plot_barycenter(X, Y, groupings): - """ - :param X: list of persistence diagrams. - :param Y: numpy.array of (n x 2). Aims to be an estimate of the barycenter - returned by lagrangian_barycenter(X, verbose=True). - :param groupings: list of lists, such that L[k][i] = j if and only if - the i-th point of the barycenter is grouped with the j-th point of the k-th - diagram. - """ - # import matplotlib now to avoid useless dependancies - - import matplotlib.pyplot as plt - from matplotlib.patches import Polygon - - fig = plt.figure() - ax = fig.add_subplot(111) - - # n_y = len(Y.points) - for i in range(len(X)): - indices = groupings[i] - n_i = len(X[i]) - - for (y_j, x_i_j) in indices: - y = Y[y_j] - if y[0] != y[1]: - if x_i_j < n_i: # not mapped with the diag - x = X[i][x_i_j] - else: # y_j is matched to the diagonal - x = _proj_on_diag(y) - ax.plot([y[0], x[0]], [y[1], x[1]], c='black', - linestyle="dashed") - - ax.scatter(Y[:,0], Y[:,1], color='purple', marker='d', zorder=2) - - for X_i in X: - if X_i.size > 0: - ax.scatter(X_i[:,0], X_i[:,1], marker ='o', zorder=2) - - shift = 0.1 # for improved rendering - try: - xmin = np.min(np.array([np.min(x[:,0]) for x in X if len(x) > 0]) - shift) - xmax = np.max(np.array([np.max(x[:,0]) for x in X if len(x) > 0]) + shift) - ymin = np.min(np.array([np.max(x[:,1]) for x in X if len(x) > 0]) - shift) - ymax = np.max(np.array([np.max(x[:,1]) for x in X if len(x) > 0]) + shift) - except ValueError: # to handle the pecular case where we only average empty diagrams. - xmin, xmax, ymin, ymax = 0, 1, 0, 1 - themin = min(xmin, ymin) - themax = max(xmax, ymax) - ax.set_xlim(themin, themax) - ax.set_ylim(themin, themax) - ax.add_patch(Polygon([[themin,themin], [themax,themin], [themax,themax]], fill=True, color='lightgrey')) - ax.set_xticks([]) - ax.set_yticks([]) - ax.set_aspect('equal', adjustable='box') - ax.set_title("Estimated barycenter") - - plt.show() - |