How do I get an array of deviations from 0 or 2 pi radians from an array of bearings ranging 0 to 2 pi?

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Nobutaka Kim
Nobutaka Kim 2022-2-11
回答： KSSV 2022-2-11
I have a one dimensional array, basically a row from my 2d array of many rows, of bearing from 0 to 2 pi radians.
I want a new array that shows me how far off from 0 or 2 pi radians each element is.
So I tried
```
mod_arr = mod(arr_of_bearings, (2*pi))
```
but this is obviously wrong.
What would be a correct way to do it.
Most of bearings are near 0 or 2 pi radians so are like 0.0134, 6.2456, etc.

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回答（1 个）

KSSV
KSSV 2022-2-11
You can calculate the Euclidean distance. Read about pdist. You can calculate difference along x and y axes, read about diff, gradient.

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