Jake Vanderplas

Over the past couple days I pushed a number of big updates to the package. Take a look at [This Example](https://github.com/altair-viz/altair-transform#example-pre-aggregating-large-datasets) in the README which shows how the package can...

Looks good. One concern I have is that the names of matplotlib colormaps do not correspond to the names of vega schemes, but there's not really any easy way around...

> can we for all those params support both strings and alt objects? I'd lean toward no. I think the main benefit of this API is the ability to create...

Let's go ahead and apply colormap directly to scheme as here. Not a perfect solution, but I think it's the best thing that can be done easily at this point....

Sure, we could implement those plots here.

What kind of chart are you asking about?

If NumPy is the motivation for this, then I think there may be a problem: NumPy has explicitly decided to differ from the Array API in this respect; see https://numpy.org/neps/nep-0056-array-api-main-namespace.html#copy-keyword-semantics

I see, thanks.

In NumPy's implementation, do `copy=None` and `copy=False` have the same semantics of "copy only if necessary"?

> I am trying to figure out why this matters for JAX True copies are sometimes important in JAX; for example functions can be called with donated buffers (in which...