我有三个向量如下:
X:
Data value_x
2008-10-01 32
2008-10-05 54
2008-10-08 84
y:
Data value_y
2008-10-02 42
2008-10-05 14
2008-10-07 74
z:
Data value_z
2008-10-01 62
2008-10-05 94
2008-10-09 24
怎样把它们合并成
Data value_x value_y value_z
2008-10-01 32 NA 62
2008-10-02 NA 42 NA
2008-10-05 54 14 94
2008-10-07 NA 74 NA
2008-10-08 84 NA NA
2008-10-09 NA NA 24
同时,能否用线性插值来插入缺失值NA?