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yownbus
2006 May 31
2
How to choose columns in data.frame by parts of columns' names?
...EST" "YEST"
[2] "XNOEMP1" "XNOEMP2" "YNOEMP1" "YNOEMP2"
[3] "XBUS10" "XBUS10A" "XBUS10B" "XBUS10C"
[4] "YBUS10" "YBUS10A" "YBUS10B" "YBUS10C"
[5] "XOWNBUS" "XSELFEST" "YOWNBUS" "YSELFEST"
Those columns have names beginning with "X" or "Y". Each "X" is paired
by a "Y", e.g. "XG1" and "YG1", but they are not in the order of "X Y
X Y ...". I want...