我试图计算两个列之间的协方差。我做着做着如下: A = pd.DataFrame({'group':['A','A','A','A','B','B','B'],
'value1':[1,2,3,4,5,6,7],
'value2':[8,5,4,3,7,8,8]})
B = A.groupby('group')
B['value1'].cov(B['va
我有以下2个dataframes有: day
date val
11740 2016-01-04 1.3970
11741 2016-01-05 1.3991
11742 2016-01-06 1.4084
11743 2016-01-07 1.4061
和 df
Adj_Close Close Date High Low
182 12927.
望着lmplot documentation,它显示 参数: x, y : strings, optional
Input variables; these should be column names in data.
data : DataFrame
Tidy (“long-form”) dataframe where each column
我有一个独特的问题,我主要希望找到加快此代码的一些方法。我有一组存储在数据帧的字符串,每个中有好几个名字,我知道名字的数量这一步之前,像这样: print df
description num_people people
'Harry ran with sally' 2 []
'Joe was swinging with sally' 2 []
'