Compare two 1D Arrays minimal/max distance value

[altenbach · Accepted solution]

---

@medum wrote:

First if I have an an array with constant step size. 

The other has differenz step size changing + 10, 11+ 10 and so an

For example: 

x = 1,11,21,31,41,51,61,71,81,91,101

y = 1,11,22, 32, 43, 53, 64, 74, …

---

You show two arrays (x, and y) and they have different increments in value. The step size (one step per array index) is identical for both. You have an under-determined system.

Obviously the arrays differ and it is not obvious at all what you consider a "comparison" here. What determines the first derivative of the data? Could it be these should not even be integers and rounding to nearest integer causes the jitter?

[medum]

yes i want to classify the jitte this should be equal?

I how can near that or calculate the jitter. My aim is more tje jitter

[Yamaeda]

Upscaling didn't work like i thought it would. Using Initialize array you can '"upsample".

[medum]

coud i calculate the jitter between the both arrqys?

[altenbach]

Why not do a linear fit of both and compare offset and slope?

[medum]

I want an solution that shows the generellay equality of the both with  ranges.

I dont know of lineare fit helps?

[JÞB]

---

@altenbach wrote:

---

@medum wrote:

First if I have an an array with constant step size. 

The other has differenz step size changing + 10, 11+ 10 and so an

For example: 

x = 1,11,21,31,41,51,61,71,81,91,101

y = 1,11,22, 32, 43, 53, 64, 74, …

---

You show two arrays (x, and y) and they have different increments in value. The step size (one step per array index) is identical for both. You have an under-determined system.

Obviously the arrays differ and it is not obvious at all what you consider a "comparison" here. What determines the first derivative of the data? Could it be these should not even be integers and rounding to nearest integer causes the jitter?

---

It sounds like rho might be handy 😉

I know you prefer I/Q but Polar coordinates are useful too

[altenbach]

---

@medum wrote:

I want an solution that shows the generellay equality of the both with  ranges.

I dont know of lineare fit helps?

---

• Obviously, they are not equal. The best you can do is rate "similarity" by defining the term as used in this specific problem.
• I have no idea what you mean here by "ranges".
• If you don't know if something helps, just try it and see!

[medum]

I want to calcultate the jitter from both?

[altenbach]

---

@medum wrote:

I want to calcultate the jitter from both?

---

sounds like a plan. Just do it!

(... after fully understanding the data and defining the type of jitter (periodic, random) and units you want (TIE, JCC, MD, MAD, RMS, etc.))