我的数据框如下所示
0 1 2 3 4
0 0.660377 0.75 0.728395 1.000000 0.011364
1 0.452830 0.50 0.629630 0.083333 0.045455
2 0.971698 0.75 0.975309 0.166667 0.079545
3 0.169811 0.25 0.172840 0.291667 0.068182
4 0.216981 0.25 0.222222 0.000000 0.090909
5 0.669811 0.50 0.839506 0.333333 0.045455
我需要用倒数值替换第一列。在熊猫中有没有内置的方法呢?
答案 0 :(得分:5)
我认为你需要与<!-- Path directly embedded in SVG -->
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<div>Clicking the star toggles the color in Chrome but not in FF.</div>
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分开:
1
或使用DataFrame.rdiv
:
df[0] = 1 / df[0]
print (df)
0 1 2 3 4
0 1.514287 0.75 0.728395 1.000000 0.011364
1 2.208334 0.50 0.629630 0.083333 0.045455
2 1.029126 0.75 0.975309 0.166667 0.079545
3 5.888900 0.25 0.172840 0.291667 0.068182
4 4.608698 0.25 0.222222 0.000000 0.090909
5 1.492958 0.50 0.839506 0.333333 0.045455
或使用numpy.reciprocal
:
df[0] = df[0].rdiv(1)
print (df)
0 1 2 3 4
0 1.514287 0.75 0.728395 1.000000 0.011364
1 2.208334 0.50 0.629630 0.083333 0.045455
2 1.029126 0.75 0.975309 0.166667 0.079545
3 5.888900 0.25 0.172840 0.291667 0.068182
4 4.608698 0.25 0.222222 0.000000 0.090909
5 1.492958 0.50 0.839506 0.333333 0.045455