Demo request: 3D streamplot

[henry2004y]

Hi,

I'm wondering if a 3D streamplot demonstration could be added? Up to now, the only example I've found is from Grassman.jl.

This kind of plots is pretty common in 3D visualization software like ParaView and VisIt, and I really hope we can generate 3D field lines/streamlines with Makie at ease!

[asinghvi17]

Does it not just work? But would be nice to have an example anyway

[lazarusA]

we have this one here: https://juliadatascience.io/glmakie

see section: 6.9.3 Arrows and Streamplots

ok, we should add some versions here as well.

[henry2004y]

For instance, one thing that usually confuses me is that streamplot requires these function + range input arguments, while what I usually have is three 3D arrays ux, uy, uz or one 4D array u with corresponding mesh information.

At least from the official document, I am not sure how to handle this easily.

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I found a Makie discussion on how to do this: Streamplot from numerical data. Basically the idea is that for a numerical field input, we create an interpolation function and pass that to streamplot. I would say this eventually should be a feature for streamplot internally, but for now maybe a demo workaround would be nice~