Displaying 1 result from an estimated 1 matches for "genx1x2".
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gen12
2009 Jan 28
2
extract positive pairs
....
???????????X1??? ??? ??? ?X2
31.0 9.0
11.0 1.0
1.0 0.0
0.0 0.0
8.0 0.0
0.0 0.0
2.0 2.0
18.0 3.0
0.0 0.0
0.0 0.0
0.0 0.0
10.0 0.0
6.0 0.0
...
The new data will be
X1'?? X2'
31.0 9.0
11.0 1.0
2.0 2.0
18.0 3.0
I tried to write the function as:
y1y2 <-? read.csv("genX1X2.csv", header=FALSE)
(y1y2[,1] > 0 )? &&? (y1y2[,2]>0)
cbind(y1y2[,1],y1y2[,2])
?
Thank you for your help.