Theme River Diagram Generator
A river-like stacked area chart showing multiple themes over time.
Table preview
Data Input
Instructions
Introduction
The themed river diagram generator is used to display the values of multiple themes or categories over time. It presents the evolution and proportion of themes in a river-like stacked area diagram. It is suitable for time series topic trend analysis and can be exported as PNG, JPG, WebP images.
Steps
In the data input area, fill in the date topic numeric format line by line (one data point per line) Optionally fill in the chart title Chart automatic preview Use the download chart to export the image.
Notes
The chart is rendered locally in the browser, and the data is not uploaded to the server; the date is recommended to use a parsable format such as YYYY-MM or YYYY-MM-DD; multiple topics are automatically stacked under the same date; rows with empty or non-numeric values are ignored.