python中的频率表

Question

我有一个连续值Tone。如何从数据框中创建频率表？

dataframe.Tone = [-0.9, -0.8, -0.6, -0.3, -0.2, 0, 0.1, 0.2, 0.4, 0.7, 1.2, 1.3, 1.4]`

resultDF：

class interval | frequency 
(-1.0) - (-0.6) | 3
(-0.5) - (-0.1) | 2
   0   -  0.4   | 4
  0.5  -  0.9   | 1
   1   -  1.4   | 3

Answer 1

IIUC使用cut

pd.cut(l,[-1,-0.6,-0.1,0.4,0.9,1.4]).value_counts()
(-1.0, -0.6]    3
(-0.6, -0.1]    2
(-0.1, 0.4]     4
(0.4, 0.9]      1
(0.9, 1.4]      3
dtype: int64