Andras Deak

I updated Eric's ["crappy implementation"](https://github.com/sympy/sympy/issues/7219#issuecomment-154768904) for the corresponding question on Stack Overflow. It seems to me that the representation of `Derivative`s has changed, and that we can shoehorn in a...

@hanspi42 would that not be too specific? I imagine functions could then similarly be aware of their derivative, their integral, and all other kinds of transforms.

I've ticked out `Plotter.add_volume()`, thanks to @puripant, our newest contributor :tada:

> I am planning to add a bunch about views in one PR. Excellent! > For those that are simply wraps of [renderer.py](https://github.com/pyvista/pyvista/blob/main/pyvista/plotting/renderer.py) functions, I should add examples in [renderer.py](https://github.com/pyvista/pyvista/blob/main/pyvista/plotting/renderer.py),...

As I also noted there, we might want to be a bit more generous and have something like `ClosedResourceError` (or anything not plotter-related in name; I'm terrible at naming things)....

> This change means that when a glyph is used for a plot, the legend will always be that glyph. I would like to discuss if it is better to...

I agree with @MatthewFlamm, your recommendation to allow `PolyData` faces in `add_mesh()` would allow the easy customization I had in mind, @germa89. If someone wants to plot three glyphs from...

This won't be easy. One straightforward way to implement copying would be to do a pickle -> unpickle round. This doesn't currently work out of the box: ```py >>> import...

I'm planning to look at this and some other PRs (e.g. https://github.com/pyvista/pyvista/pull/2980, https://github.com/pyvista/pyvista/pull/2964), but I won't have time for that until tomorrow or maybe even Friday. I see there's a...

I didn't expect history to be mucked up this bad by my choice to open this PR on top of a feature branch first. Let me know if I should...