This video covers solutions to exercise 14: Interpolation & Curve Fitting. All the code works perfectly in Octave as it is shown here in Matlab. This video is part of a series comprising a complete introductory course in Matlab / Octave.
The full playlist is here: https://www.youtube.com/watch?v=NxHHtjB3UQQ&list=PLg3AZRFBfHLU0QyUzJ5TH1AkXeLIQ_zSm
A free Matlab textbook, Zero to MATLAB, is available here: https://github.com/osuoer/zero-to-matlab/raw/master/Zero%20to%20MATLAB.pdf
Google drive link to all Matlab code: https://drive.google.com/drive/folders/1G2EKVimWhjRacAEMl_K9yMtcvAFf0xkm?usp=sharing
A direct link to the code used in this video is here: https://drive.google.com/file/d/1cwv3MtGkEpciv70bG7wOYBLG521TmEOs/view?usp=drive_link