scipy.sparse.csgraph.csgraph_from_masked¶
- scipy.sparse.csgraph.csgraph_from_masked(graph)¶
从掩码数组构造CSR格式的图形。
0.11.0 新版功能.
- 参数
- graphMaskedArray
输入图形。形状应为(n_Nodes,n_Nodes)。
- 退货
- csgraphcsr_matrix
图的压缩稀疏表示,
示例
>>> import numpy as np >>> from scipy.sparse.csgraph import csgraph_from_masked
>>> graph_masked = np.ma.masked_array(data =[ ... [0, 1, 2, 0], ... [0, 0, 0, 1], ... [0, 0, 0, 3], ... [0, 0, 0, 0] ... ], ... mask=[[ True, False, False, True], ... [ True, True, True, False], ... [ True, True, True, False], ... [ True, True, True, True]], ... fill_value = 0)
>>> csgraph_from_masked(graph_masked) <4x4 sparse matrix of type '<class 'numpy.float64'>' with 4 stored elements in Compressed Sparse Row format>