Add functions to convert between jagged arrays and frames

kMutagene commented 2 years ago

Content

This PR adds functions to:

Create frames from jagged arrays:
- FromJaggedArray for C#, ofJaggedArray for F#
Convert frames to jagged arrays:
- static members toJaggedArray<'R> for any type of conversion for the frame data (returns 'R[][])
- function Frame.toJaggedArray to return a float [][] analogously to Frame.ToArray2D
I also added tests the same way they work for the Array2D functions, as well as a test that compares frames from an Array2D and a jagged array with the same data.

Why?

These are simply convenience functions that improve interop with Plotly.NET. I often handle data frames with numeric values only, where i want to visualize the contents after some transformations with Deedle. Charts that accept two-dimensional data in Plotly.NET expect data as jagged arrays, so i would love to see this added as it prevents a clunky conversion step from the Array2D obtained by Frame.ToArray2D and the chart initialization.

additional notes

The build fails for me with an outdated log format, so i updated build dependencies and fake as well, if that breaks anything please let me know.

zyzhu commented 2 years ago

It's indeed a convenience function, especially from C# as there is no helper function array2D in C#. Thanks for your review @FoggyFinder!

zyzhu commented 2 years ago

@kMutagene, I've released 2.4.1. BTW, would you like to be a co-maintainer of this project? As you are the main contributor to FsLab ecosystem, it could help you to iterate faster.

kMutagene commented 2 years ago

@zyzhu sure, that would be great!

zyzhu commented 2 years ago

That's great! Just added you as maintainer of the project now. I also sent you invitation on nuget.

fslaborg / Deedle