Sankey Chart

In this article, we will explain how to create and customize a sankey chart. So let's get started!

Creating a Sankey Chart

What is a Sankey Chart?

A Sankey Chart is a type of flow diagram where the width of the arrows is proportional to the magnitude of the flow. These charts are ideal for visualizing:

• User journeys

• Resource allocation

• Data or process flows

• Drop-offs in conversion funnels

Example: Website User Journey

A Sankey chart visualizing how users move through a website might look like this:

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Step-by-Step Guide

Step 1: Enter Your Prompt and Proceed

Start by describing your intent. Enter a prompt such as:

Website User Journey

This helps the AI understand the context of your analysis. Then, click Next.

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Step 2: Select and Upload a Data Source

Choose how to bring in your data. You can:

• Upload a CSV file

• Upload an Excel (.xlsx/.xls) file

• Use a database connection

• Select from previously uploaded datasets

In this example, we select file_sankey_chart_data.

Make sure your dataset includes:

• A Source column (e.g., Homepage)

• A Target column (e.g., Checkout)

• A Value column (e.g., Number of users)

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Step 3: Configure the Sankey Chart

Define the chart by mapping columns from your dataset:

• Source – Starting point of each flow

• Target – Next step or destination

• Value – Quantity or weight of the flow

You may also:

• Apply filters to limit or segment the data

• Sort data using sum of values to emphasize major paths

Click Save to render the chart.

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Step 4: Customize Using the Advanced Editor

To fine-tune the visual style, click Advanced Editor.


This opens a side panel for visual customization of your Sankey chart.

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Styling Options

🔗 Link Styling

• Chart Background: Customize the background color of the entire chart canvas.

• Link Color Mode: Choose a single color or gradient style for flow links.

• Link Color: Define custom link colors.

• Stroke: Enable borders around link paths for clarity.

🔲 Node Styling

You can adjust how each node (e.g., Homepage, Product Page, Checkout) appears:

• Font Family – Choose from fonts like Arial, Helvetica, Times, etc.

• Font Size – Define readable label size (e.g., 12–16px).

• Font Color – Set color for node labels.

• Bold / Italic – Style text with emphasis as needed.

• Label – Edit the text that displays on each node.

• Node Padding – Add space around nodes to avoid crowding