Simple vector question.

If there is a vector C,

C = [3 8 9 7 3]

how can I make another vector that displays its position?

eg. D = [1 2 3 4 5]

eg2. E = [6 10 9 11 3 9 31 41]

F = [1 2 3 4 5 6 7 8]

eg3. Y = [7 5 3 1 8 6]

Z = [1 2 3 4 5 6]

Answer 1

[Image Analyst]

Try

D = 1 : length(C);

Similarly for the other letter-named vectors.