A Recharts area chart displays quantitative data using filled areas between a line connecting data points and the axis.

The sync_id prop allows you to sync two graphs. In the example, it is set to "1" for both charts, indicating that they should be synchronized. This means that any interactions (such as brushing) performed on one chart will be reflected in the other chart.

The stack_id prop allows you to stack multiple graphs on top of each other. In the example, it is set to "1" for both charts, indicating that they should be stacked together. This means that the bars or areas of the charts will be vertically stacked, with the values of each chart contributing to the total height of the stacked areas or bars.

This is similar to the sync_id prop, but instead of synchronizing the interaction between the charts, it just stacks the charts on top of each other.

Multiple axes can be used for displaying different data series with varying scales or units on the same chart. This allows for a more comprehensive comparison and analysis of the data.

Use the layout prop to set the orientation to either "horizontal" (default) or "vertical".

Here is an example of an area graph with a State. Here we have defined a function randomize_data, which randomly changes the data for both graphs when the first defined area is clicked on using on_click=AreaState.randomize_data.