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t19
2008 Jun 05
1
quite complicated case(the repeated data arranage~)
...for this example I will have 6 new matrix,according to id.
it is reasonable to do this in loop for,but the I met some problem:
1:how to automatically generate the new title such as treatment1 and age1
until treatment 500,age500
2:as you see,id is not strictly from 1 to 500,some time it jump from 15
to19,skip 16,17,18, if I write a loop,it will give me lot NA,certainly I
need a way to avoid this
and one more,say I have 100 vectors like
x1....x100,x1<-c(1,3),x2<-x(2,2),...x100<-(number,number)
I want to combine all this 100 vectors in one new vector say Xall
which is Xall<-cbind(x1,x2,....