Leonardo Uieda

Hi @mtb-za, trying to revive this after a while. Thanks for your comments! > Putting it into a chain does not complain, but might not really be what is wanted...

> How would one get a vertical derivative? Vertical is only possible for potential fields since it relies on Laplace's equation. So for Verde it's impossible. But you should be...

Calculating strain rate from GPS data would be a great example of this in action. See equations and results in https://nhess.copernicus.org/articles/9/1177/2009/nhess-9-1177-2009.pdf Main problem will be passing `VectorSpline2D` to this class....

I've changed the base here to `2.0-dev` so once the merge conflict is resolved we can merge this.

Sorry about that. I'll edit the description with an example. Just trying to run it on CI to see if it really breaks.

Done.

This was reported to me by a user on Windows and I tested on GitHub Actions since I don't have access to a Windows machine for testing. I'm sure if...

> it would be good if while refactoring sunpy's sample data downloader we could make it so that it was reusable by affiliated packages to download a different set of...

@dokempf what do you have in mind for this one? Do you know of other repositories running it?

@santisoler the other warning about `aggregate` I couldn't find a way to fix. I think we'll just have to live with it until Pandas makes a new release. Or we...