Altair® Panopticon


Pareto Chart

The Pareto Chart is a combination of the Bar Graph and Categorical Line Graph, and can be used for comparing actuals to forecasts, and if the dataset is available, comparing individual to cumulative returns.

The traditional usage of a Pareto chart displays individual values in a descending order as bars, with the cumulative total represented by the line.


Figure 3-44. A classical Pareto graph.

A common usage of the Pareto chart is to compare actual values to forecast/target values, with the actuals being displayed as the bar, and the forecast as the line.  In this scenario, typically both measures are bound to the left Y axis, so that they have comparable scales.

Figure 3-45. Displaying actuals vs. forecast values