[R] While loop

[Rheannon]

Hello,

I am trying to loop through a matrix column and find the first value <=0 and
store that matrix location in a variable called Start.

I have tried the following:
i <- 1
j <- 1
while (Matrix[i, j] > 0)
i = (i + 1)
#loop until matrix [i, j] value <= 0
#strore that row number in a variable
Start <- i

I am getting a scripting out of bounds error and I suspect maybe the loop
isnt stoping at the end of the matrix? 

Any help is greatly appreciated!
Cheers,
Rheannon

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