We are developing a library for statistical plotting which i

Question

We are developing a library for statistical plotting which is pure Kotlin and multiplatform <https github com JetBrains lets plot> The library includes some statistical algorithms in particular smoothing algorithms We ve picked some low hanging fruit `linear model` or `lm` smoothing although we have not yet implemented more complex algorithms such as `loess` `glm` or `gam` Is anybody aware of a pure Kotlin statistical library in existence or in development which might include said algorithms

altavir · Answer

The nexus of univariate statistics in kotlin is < thomasnield> s kotlin statistics If you need only only univariate case please put an issue there and I will work on it The loess interpolator is implemented in commons math and I can easily port it to multiplatform I plan to add interpolation API to kmath but it will take more time because I want to develop robust API for generic multiavariate case We can start with the simple algorithm in kotlin statistics and then back port it to the new kmath API In either case please open an issue

altavir · Answer

Also Lets plot is very important for scientific ecosystem but we need to wrap it in more kotlinized API

Igor Alshannikov · Answer

Sounds very good I ve submitted the issue to both projects

altavir · Answer

thanks a lot I will try to find the time to work on Interpolation API When I am done it will be quite ease to add `loess`

thomasnield · Answer

< altavir> please keep me posted

Igor Alshannikov · Answer

Guys we ve managed `loess` check this out <https nbviewer jupyter org github JetBrains lets plot blob master docs examples jupyter notebooks geom smooth ipynb>

altavir · Answer

OK sorry I did not manage to make it past the conversion stage Can you give a reference to the actual code implementing the feature

altavir · Answer

I ve assigned a student for this task Some interpolation API is ready but not yet tested <https github com mipt npm kmath blob dev kmath functions src commonMain kotlin scientifik kmath interpolation SplineInterpolator kt>

Igor Alshannikov · Answer

Cool somebody asked me about spline interpolation on line plots May be I can use this when ready

Igor Alshannikov · Answer

This is the local regression entry point <https github com JetBrains lets plot blob master plot base portable src commonMain kotlin jetbrains datalore plot base stat regression LocalPolynomialRegression kt>

altavir · Answer

Oh it is much more simple than the commons math code I was porting My current problem is that I want to do it in a generic way so we could use interpolation for any value with defined field but of course it is not what you need for simple plotting I will try to dedicate more time to the problem saly I do not have a lot of it right now