I need to create one vector from performing subtraction within another.

I need to take a vector X1 X2 X3 X4 X5 and create a new vector, 1 unit shorter: (X1-X2) (X2-X3) (X3-X4) (X4-X5) and so on. I'm very new to matlab and any help would be appreciated.

Answer 1

[Stephen23]

Just negate the output of diff:

 -diff(your_vector)

eg

 >> vec = [1,8,3,7,2];
 >> -diff(vec)
ans =
    -7     5    -4     5

[Darreon Schwartz]

Perfect, thank you!