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Data Visualization

Stream Graph Generator

· Last updated：2025-11-04

Generate beautiful stream graphs for time series data with smooth flowing animations and baseline variations

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Written by the Elysia Tools team
Visualization69
Data Visualization57
Graph27
Time Series8

Tool usage guide

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Category
Data Visualization
Input types
textarea, text, select, number, checkbox
Output type
html
Sample coverage
4
API ready
Yes

Overview

The Stream Graph Generator creates visually engaging, stacked area charts that represent time-series data through smooth, flowing curves. It is an ideal tool for visualizing how different categories evolve and fluctuate over time, providing a clear view of trends and volume changes.

When to use

  • When you need to visualize the relative changes in volume for multiple categories over a specific time period.
  • When you want to highlight trends and patterns in time-series data using a fluid, organic aesthetic.
  • When you need to present stacked data in a way that emphasizes the overall shape and flow rather than just individual data points.

How it works

  1. 1Input your time-series data as a JSON array or a simple name-value list.
  2. 2Customize the visual output by selecting a color scheme, baseline type, and chart dimensions.
  3. 3Toggle display options like grid lines and series labels to refine the presentation.

Use cases

  • Tracking website traffic sources over several months to see which channels are growing.
  • Visualizing monthly sales performance across different product categories to identify seasonal trends.
  • Displaying shifts in market share for various competitors over a multi-year period.

Examples

1. Monthly Product Sales Trends

Marketing Analyst

Background

The analyst needs to present the growth of three different product lines over an eight-month period to the executive team.

Problem

Standard bar charts look cluttered and fail to show the 'flow' of market interest over time.

How to use

Input the monthly sales figures for Product A, B, and C into the Time Series Data field and select the 'Vibrant' color scheme.

chartTitle: 'Product Sales Growth', colorScheme: 'vibrant', showGrid: true

Outcome

A professional, flowing stream graph that clearly illustrates the rising and falling popularity of each product line.

2. Website Traffic Source Analysis

Content Manager

Background

The manager is reviewing traffic data from organic search, social media, and direct visits to understand audience behavior.

FAQ

What data formats are supported?

The tool supports JSON arrays containing names and value arrays, or simple text-based lists formatted as 'Name:value1,value2,value3'.

Can I change the baseline of the graph?

Yes, you can choose between a 'Zero Baseline' for standard stacking or a 'Centered' baseline for a symmetrical stream effect.

Is the chart size adjustable?

Yes, you can define the exact width and height in pixels within the configuration settings, ranging from 400px to 1200px for width and 300px to 800px for height.

Can I customize the colors?

Yes, the tool provides several preset color schemes including Warm, Cool, Pastel, Vibrant, and Business themes.

Are the labels and grid lines optional?

Yes, you can toggle the 'Show Grid' and 'Show Labels' checkboxes to show or hide these elements based on your preference.

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4
Generate the chart to visualize your data with smooth, stacked flowing areas.

Problem

It is difficult to see how the proportion of traffic sources changes relative to each other using traditional line charts.

How to use

Paste the traffic data in JSON format and set the baseline to 'Centered' to create a balanced visualization.

baselineType: 'centered', showLabels: true, chartWidth: 900

Outcome

A symmetrical stream graph that highlights the dominant traffic sources and their fluctuations throughout the year.