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Finite difference scheme used in 'CURL' function?

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Puja Jawahar
Puja Jawahar on 7 Jul 2020
Commented: Puja Jawahar on 7 Jul 2020
Which finite difference scheme does Matlab use while estimating vorticity using the CURL function?

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Sindar
Sindar on 7 Jul 2020
Edited: Sindar on 7 Jul 2020
You can actually see the full code using
edit curl
it looks like everything is based on gradient, which appears to use a 2-point difference.
(In fact, all the code for gradient is there too. So, you could set up alternate FD schemes. I'd suggest copying the code into something like gradient_4point, curl_4point)

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