Changing nth value of a vector?

Hello,

I have a vector of 500.000 values and I want to change, or update every 10th value of this vectore and wonder how to realize this? I was thinking about a for-loop, but it did not work out yet.

It would be great if someone could give me a hint how to implement this.

Answer 1

[bym]

X  %vector of 500,000 values
X(1:10:500000)= newValue % assuming newValue is a constant