[英]sum columns in dataframe with pandas
I have a dataframe df_F1 我有一个数据框df_F1
df_F1.info() df_F1.info()
<class 'pandas.core.frame.DataFrame'>
Int64Index: 2 entries, 0 to 1
Data columns (total 7 columns):
class_energy 2 non-null object
ACT_TIME_AERATEUR_1_F1 2 non-null float64
ACT_TIME_AERATEUR_1_F3 2 non-null float64
dtypes: float64(6), object(1)
memory usage: 128.0+ bytes
df_F1.head() df_F1.head()
class_energy ACT_TIME_AERATEUR_1_F1 ACT_TIME_AERATEUR_1_F3
low 5.875550 431
medium 856.666667 856
I try to create a dataframe Ratio wich contain for each class_energy the value of energy of each ACT_TIME_AERATEUR_1_Fx devided by the sum of energy of all class_energy for each ACT_TIME_AERATEUR_1_Fx. 我尝试创建一个数据帧比率,该比率包含每个class_energy的每个ACT_TIME_AERATEUR_1_Fx的能量值,该值除以每个ACT_TIME_AERATEUR_1_Fx的所有class_energy的能量之和。 For example :
例如 :
ACT_TIME_AERATEUR_1_F1 ACT_TIME_AERATEUR_1_F3 low 5.875550/(5.875550 + 856.666667) 431/(431+856) medium 856.666667/(5.875550+856.666667) 856/(431+856)
Can you help me please to resolve it? 您能帮我解决吗?
Thank you in advancce 谢谢你的先进
Best regards 最好的祝福
you can do this: 你可以这样做:
In [20]: df.set_index('class_energy').apply(lambda x: x/x.sum()).reset_index()
Out[20]:
class_energy ACT_TIME_AERATEUR_1_F1 ACT_TIME_AERATEUR_1_F3
0 low 0.006812 0.334887
1 medium 0.993188 0.665113
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