substract an element from previous element in a matrix

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Mahmoud Chawki 2022-5-10

评论： Star Strider 2022-5-10

i have a k vector that contains 5 elements.

i want to write a code that substract - the second element from first

- the third element from second

- the fourth element from third

- the fifth element from fourth

and put them all in a vector form that will contain 4 elements

b=[k(2)-k(1) k(3)-k(2) k(4)-k(3) k(5)-k(4)];

how can i do that?

Star Strider 2022-5-10

The diff function seems to be appropriate.

Torsten 2022-5-10

b = diff(k.^2)

Star Strider 2022-5-10

@Torsten — Thank you!

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