Consecutive subtraction of the entries of a vector

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Hmm! on 13 Jan 2021
Commented: James Tursa on 14 Jan 2021
I am a novist in MATLAB. I have no idea of how to subtract the entries of a vector consecutively. Say if A=[3,5,9,11,15]' and I want something like this B =[3, 2, 4, 2, 4]. Any help will do, thanks in advance.

Accepted Answer

James Tursa
James Tursa on 13 Jan 2021
Edited: James Tursa on 13 Jan 2021
If A is a row vector:
B = [A(1) diff(A)];
If A is a column vector:
B = [A(1);diff(A)];

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