Temporary example for testing optim replacement (KMbranch)#3

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Xaleed wants to merge 18 commits intomainfrom

Commits on Dec 9, 2025

Some minor corrections to the biplot.spline.axis function to improve its alignment with the Fortran implementation.
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Example: calling from Fortran
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Commits on Dec 13, 2025

Full Translation from Fortran to Rcpp
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Replace R's optim() with a fully manual Nelder–Mead optimization algorithm implemented in Rcpp
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Commits on Dec 16, 2025

Commits on Dec 28, 2025

Commits on Jan 21, 2026

I fixed all the randomness in this code (using seed), so you should see a similar result for Rcpp and Fortran.
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Commits on Apr 9, 2026