Theoretical background for Matlab functions

Hello,

Please, is there anyway or anywhere to find the theoretical background of what is programmed in Matlab functions ? For example I would like to see the formula that is programmed in the griddedInterpolant function, but I can find it nowhere. The Matlab documentation does not provide.

Thank you for help.

[John D'Errico]

The "formula"? There are many methods in griddedInterpolant. A complete explanation of everything would require a college level course, or more.

[Daniel M]

In general you can try

open <function name>

and read through the source code. In the case of griddedInterpolant, where it is built-in (and therefore unavailable) you can try going back to older Matlab versions to see if you can view it there. This might work because often Mathworks will have a function written in a regular m-file in a release before rewriting it as a built-in function.

You can also try your hand at independent research and look up algorithms for these functions in textbooks, papers, or even other open-source languages. They are usually common enough (at least at an introductory level).

griddedInterpolant does have a lot of documentation. And you can start by trying to understand the various interp functions.

[Idossou Marius Adom]

Sure John D'Errico. But if a (may be huge) documentation exists I can check therein for specific stuffs. Thank you anyway.

[Idossou Marius Adom]

Thank you very much Daniel Martire for your help.

[Daniel M]

Finally, you can review John D'Errico's own gridfit utility. John's code is always top quality, easily readable, and well documented.