2020
10-06
10-06
Python过滤掉numpy.array中非nan数据实例
代码需要先导入pandasarr的数据类型为一维的np.arrayimportpandasaspdarr[~pd.isnull(arr)]补充知识:pythonnumpy.mean()axis参数使用方法【sum(axis=*)是求和,mean(axis=*)是求平均值】如下所示:importnumpyasnpX=np.array([[1,2],[4,5],[7,8]])print(np.mean(X,axis=0,keepdims=True))print('*'*50)print(np.mean(X,axis=1,keepdims=True))print('*'*50)print(X.mean(axis=0))print('*'*50)print(X.mean(ax...
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