10.15 delta()

Prototypes		Header File(s)
`template <class T>`
`RWMathVec<T>`	`delta(const RWMathVec<T>&)`	`<rw/math/mathvec.h>`

10.15.1 Description

Takes a vector x as an argument and returns a vector y of element differences. The first element in y is set equal to the first element of x. An element y(i) where i is not 0 is set equal to x(i)-x(i-1).

For example, if x = [2, 4, 5, 8] then y = [2, 2, 1, 3].