Replace every nth element in a vector
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I struggle with a rather simple question. I would like to generate a zero-vector with the length of the projectlength and then replace every xth value (which equals the lifetime) with the costs.
projectlength = 50;
costs = 30;
lifetime = 10;
Inv = zeros(projectlength,1);
I do not seem to get it right (Error message: Array indices must be positive integers or logical values.) although it is quite simple, I guess. Thanks for helping out!