我试图读入几个结构不好的csv文件:
[empty], A, A, B, B
time , X, Y, X, Y
0.0 , 0, 0, 0, 0
1.0 , 2, 5, 7, 0
... , ., ., ., .
使用带有pandas.read_csv
参数的header=[0,1]
可以很好地访问值:
>>> df = pd.read_csv('file.csv', header=[0,1]'
>>> df.A.X
0 0
1 2
...
但是时间头上方的空字段会导致一个丑陋的Unnamed: 0_level_0
级别:
>>> df.columns
MultiIndex(levels=[['Unnamed: 0_level_0', 'A', 'B'], ...
有没有办法解决这个问题,这样我就可以再次使用df.Time
访问时间数据了?你知道吗
编辑
这是真实数据集的一个片段:
,,Bone,Bone,Bone
,,Skeleton1_Hip,Skeleton1_Hip,Skeleton1_Hip
,,"1","1","1"
,,Rotation,Rotation,Rotation
Frame,Time,X,Y,Z
0,0.000000,0.009332,0.999247,0.021044
1,0.008333,0.009572,0.999217,0.020468
3,0.016667,0.009871,0.999183,0.019797
(另请参见:https://gist.github.com/fhaust/25ba612f99420d366f0597b15dbf43e7了解更完整的示例)
阅读方式:
pd.read_csv(file, skiprows=2, header=[0,1,3,4], index_col=[1])
我并不真正关心Frame
列,因为它是用行索引隐式给出的。你知道吗
为convert first column to
index
添加参数index_col
:或重命名列:
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