Generate area chart

How it works

A line series is closed to a baseline and filled, or multiple series are stacked by cumulative y values; the filled region communicates magnitude as well as trend. The baseline and stacking order determine how viewers read totals.

• Filling against zero emphasizes quantity; stacking shows composition.

Worked example

											Title: Quarterly Revenue
X axis: Quarter
Y axis: Revenue
Series: [{"name":"Product A","data":[30,45,55,70]},{"name":"Product B","data":[20,35,40,50]}]
Labels: ["Q1","Q2","Q3","Q4"]
Stacked: false
Width: 500
Height: 350
										

When to use this

Usage dashboards, budget reports, and volume time series use area charts.

Edge cases

• A nonzero baseline can exaggerate area differences.
• Negative values need separate handling around zero.
• Stacked series with different units produce meaningless totals.