Missing diff

Hi,

I have an array of numbers, I would like to calculate the diffs between them.

Calculate the n-th discrete difference along the given axis.

Just like the numpy diff.

Is that possible?

Ps. this is definitely not the same as your math.setDifference!

Regards, Melroy

[josdejong]

👍 let’s start simple then and see how it evolves 😃

[LloydLS]

The answer would be, but nevertheless maybe somebody just want to add it to mathjs?

x = [..., .. ,..]
y = [..., ..,..]
// Assuming both x & y are the same length
var diff = x.map((value, index) => value - y[index])

Hi, If you want to subtract one array from another in MathJS you don’t need .map(), you can just subtract one from the other.