2D Plotting

One of the main things I really miss in pyvista is the ability to make 2D plots. Sometimes a 2D plot is much easier to read than a 3D plot.

I saw vtk method to do so namely vtk.vtkChartMatrix(). It’s not the main focus of VTK to be a 2D plotting toolbox, however they have tools and they have great performance in plotting thousands (even millions) of point, compared to matplotlib. I currently subclassed the pyvistaqt.BackgroundPlotter to mimic some behavior and replaced the central-widget.

I don’t know if 2D plotting is in the scope of the project, but I already made some working code what I would possibly like to share or even add to pyvista

[Onandon11]

Thanks for your great contribution! It’s a real nice addition I think to the pyvista codebase.

However when playing with the new code I discovered that the Charts are not like the BackgroundPlotter from the pyvistaqt library. Of course that’s a bit of a whishfull thinking, so maybe that will be delivered first step for me to implement.

Maybe some cool features to implement (as a minddump for myself)

• Reset chart
• Get selected data (right mouse button and drag)
• Creating subplots (maybe with the vtkChartMatrix)
• Set aspect ratio
• Put the Chart into a PyQt window

[dcbr]

Hi @Onandon11, Now that #1432 is merged and released I wanted to ask if there’s still something you are missing in the current implementation? I had a quick look at both examples you posted last time:

1. I don’t think this is possible yet (unless I misunderstand what you are doing)? This might be a nice method to add to Chart2D, e.g. something called set_aspect_ratio maybe?
2. I think (but haven’t tried it) setting the x- and y-axis behavior to ‘auto’ should reset to the default view?

Feel free to open a new PR to add these (or other) functionalities 😃