[R] loop over matrix: subscript out of bounds

[Maija Sirkjärvi]

I have a basic for loop with a simple matrix. The code is doing what it is
supposed to do, but I'm still wondering the error "subscript out of
bounds". What would be a smoother way to code such a basic for loop?

myMatrix <- matrix(0,5,12)
for(i in 1:nrow(myMatrix)) {
  for(i in 1:ncol(myMatrix)) {
    myMatrix[i,i] = -1
    myMatrix[i,i+1] = 1
}}
print(myMatrix)

Thanks in advance!

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