Which interpolation method is best?
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Sarah Yun
le 16 Déc 2019
Réponse apportée : Walter Roberson
le 16 Déc 2019
Hi,
I have a colomn of temperature data in a 4 column width table.
Some of the temp data has NANs - but it is regulary spaced over time.
I want to interpolate the temp data (to fill in the NANs) 4 times using different methods each time
- linear
- spline
- pchip
- makima
I can calculate the variance of each interpolation and compare it to the variance of the original data
The interpolation with the most similar variance will be selected.
Can you suggest code to do this?
Thank you
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Walter Roberson
le 16 Déc 2019
Use https://www.mathworks.com/help/matlab/ref/fillmissing.html#bva1z1c-method fillmissing() -- it supports all of the methods you are interested in.
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