在Pandas的MultiIndex DataFrame中删除重复项
问题描述:
我正在寻找一种有效的方法来使用Pandas在多索引数据框中删除重复的列.
I am looking to an efficient method to drop duplicate columns in a multiindex dataframe with Pandas.
我的数据:
TypePoint TIME Test ... T1 T1
- S Unit1 ... unit unit
(POINT, -) ...
24001 90.00 100.000 ... 303.15 303.15
24002 390.00 101.000 ... 303.15 303.15
... ... ... ... ...
24801 10000 102.000 ... 303.15 303.15
24802 10500 103.000 ... 303.15 303.15
头包含两个信息.变量的名称及其单位. 我想删除变量"T1"(重复的变量).
The header contain two information. The variable's name and its unit. I would like to drop the variable "T1" (duplicate variable).
-
.drop_duplicates()不起作用.我收到缓冲区的维数错误(预期为1,为2)"错误.
.drop_duplicates() don't work. I get "Buffer has wrong number of dimensions (expected 1, got 2)" error.
.drop(Data('T1','unit'),axis = 1)也不起作用.这样就放下了两列,而不仅仅是其中的一列.
.drop(Data('T1','unit'),axis=1) don't work either. That drop the two column and not just only one of them.
感谢您的帮助
答
I think you can use double T
:
print df
TypePoint TIME Test T1
- S Unit1 unit unit
0 24001 90 100 303.15 303.15
1 24002 390 101 303.15 303.15
2 24801 10000 102 303.15 303.15
3 24802 10500 103 303.15 303.15
print df.T.drop_duplicates().T
TypePoint TIME Test T1
- S Unit1 unit
0 24001 90 100 303.15
1 24002 390 101 303.15
2 24801 10000 102 303.15
3 24802 10500 103 303.15