working with a vector

Hi, I'm dealing with a column vector with elements growing from top to bottom: I would like each element following the first to be subtracted from its previous one. Thanks for your suggestions

Answer 1

[Voss]

% a column vector:
x = [1;4;5;7;10]

x = 5×1

1 4 5 7 10

% one way:
diff(x)

ans = 4×1

3 1 2 3

% another way:
x(2:end)-x(1:end-1)

ans = 4×1

3 1 2 3

[Federico Paolucci]

Thank you very much, i have another question: is there a way to maintain "1" as the first element of the new vector? in this case, I would obtain [1;3;1;2;3] from x = [1;4;5;7;10]

[Voss]

You're welcome!

x = [1;4;5;7;10];

new_x = [x(1); diff(x)]

new_x = 5×1

1 3 1 2 3