[R] Simple For Loop Help

[arun.gurubaramurugeshan]

Hi,
I need help with the following.

I have a dataset Y with 200 observations and three variables Y1, Y2 & Y3. I
have to find the minimum of Y1, Y2 & Y3 and if the minimum is Y1 then I have
to assign 1 to a variable (Y4), if Y2 is the minimum then "2" to Y4  else
"3" to Y4. This is what I have done....

for (i in 1:200) if(Y1<Y2 & Y1<Y3) Y$Y4=1 else if (Y2<Y3) Y$Y4=2
else Y$Y4=3

and R is throwing back this warning message

Warning messages:
1: In if (Y1 < Y2 & Y1 < Y3) Y4 <- 1 else if (Y2 < Y3) Y4
<- 2 else Y4 <- 3 :
  the condition has length > 1 and only the first element will be used
2: In if (Y2 < Y3) Y4 <- 2 else Y4 <- 3 :
  the condition has length > 1 and only the first element will be used

Any help would be appreciated.

Thanks
Arun

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