Add a saver based on Kaleido

[jakevdp]

This would make it easier to distribute and install the required dependencies: https://github.com/plotly/Kaleido

[bodacious-bill]

Seconding this. I recently stumbled upon Altair, and I love the speed and flexibility it offers.

However, my workplace is having problems with installing the odd dependencies of altair_saver, and making sure they work with our Jupyterlab implementation. Meanwhile, Kaleido is a simple installation and works fine with plotly.

I still prefer Altair to plotly, but I'm afraid I'll have to use plotly/Kaleido instead since I can't save charts to images with Altair currently.

[jakevdp]

Awesome - is this something you'd be willing to work on?

[bodacious-bill]

Well, I would, but I don't really have a coding background. I'm an engineer and mainly code in python for data analysis. I don't know C++ or javascript.

Would I be able to contribute? I'd be happy to if so, but it seems out of my wheelhouse.

Edit: I just read through the Kaleido documentation on adding a scope, and then through all the mentioned code for plotly to see what it entailed. Seems like not only would it require some JS/C++ background to write the scope, but one would need to be familiar with the vega or vega-lite JS code as well.

[joelostblom]

Since Altair 5.2, the functionality of Altair Saver is now available in Altair via the vl-convert package. Most of the functionality has been available since 5.0, and the main addition in 5.2 was PDF export. See the docs on how to save charts for more details

We are going to archive this repo, so I'm closing all the open issues and PRs before doing so. Try out the new options for saving charts mentioned above and if you run into issues, please open an issue directly in the altair or vl-convert repo.