Proportional area chart

Description

A Proportional Area Charts are used for comparing proportions (size, quantities, etc.) without the usage of scales. They are therefore only suitable to compare a small set of values, and usually should be combined with text annotations displaying the value [1, 2].

Example:

Pointers

• Ideally, you start prototyping in a scripting or notebook environment where you can iterate fast. installation instructions can be found here: https://plotly.net/#Installation
• Charts like this that are using baseline trace types to create a new chart type should only be implemented in the top-level Chart API. An example where this is already done is the Range chart that combines a set of differently styled line charts.

References

• [1] https://datavizproject.com/data-type/proportional-area-chart-circle/
• [2] https://datavizcatalogue.com/methods/area_chart.html

Start by prototyping in a scripting or notebook environment using the Plotly.NET installation instructions. Read the Chart2D.fs Bubble Chart and Range chart examples, then implement the new chart in the top-level Chart API with positioning for the bubbles. Done means the API provides a proportional area chart that compares values through bubble sizes without scales.