General question: visualizations

[coreation]

Currently we have some visualizations, this issue is made so that we can exchange ideas about what visualizations could be handy and how they should work.

Point plotter:
Instead of bars, we can opt for points, perhaps even with a regression/trend option ?

Pie formatter:
When dealing with percentages, or when numeric numbers represent a part of a total category e.g. amount of items sold in a store dataset, a pie formatter would come in handy.