Add support for matplotlib styles and setting figiure size based on inches

[wybert]

If it would be great to support matplotlib styles and setting figure size based on inches. It will be great for people who want create some plot for papers.

[maximlt]

One sizing Matplotlib plots, HoloViews offers the fig_inches option for Maplotlib plots so I think this in theory is possible. This is explained in more details in the Plotting with Matplotlib guide of HoloViews.

I'm not sure to which extent HoloViews handles Matplotlib styles.

These are good feature requests, they are probably not high priority though for now.

What feels pretty important to me in this case is to document how hvPlot handles sizing plots.