pandas对每⼀列数据进⾏标准化的⽅法
两种⽅式
>>> import numpy as np
>>> import pandas as pd
Backend TkAgg is interactive backend. Turning interactive mode on.
>>> np.random.seed(1)
>>> df_test = pd.DataFrame(np.random.randn(4,4)* 4 + 3)
>>> df_test
0  1  2  3
0 9.497381 0.552974 0.887313 -1.291874
1 6.461631 -6.206155 9.979247 -0.044828
2 4.276156 2.002518 8.848432 -5.240563
3 1.710331 1.463783 7.535078 -1.399565
>>> df_test_1 = df_test
>>> df_test.apply(lambda x: (x - np.min(x)) / (np.max(x) - np.min(x))) #⽅法⼀
0  1  2  3
0 1.000000 0.823413 0.000000 0.759986
1 0.610154 0.000000 1.000000 1.000000
2 0.329499 1.000000 0.875624 0.000000numpy库是标准库吗
3 0.000000 0.934370 0.731172 0.739260
>>> (df_test_1 - df_test_1.min()) / (df_test_1.max() - df_test_1.min())#⽅法⼆
0  1  2  3
0 1.000000 0.823413 0.000000 0.759986
1 0.610154 0.000000 1.000000 1.000000
2 0.329499 1.000000 0.875624 0.000000
3 0.000000 0.934370 0.731172 0.739260
结果⼀致且正确
以上这篇pandas 对每⼀列数据进⾏标准化的⽅法就是⼩编分享给⼤家的全部内容了，希望能给⼤家⼀个参考，也希望⼤家多多⽀持。