> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://help.sigmacomputing.com/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://help.sigmacomputing.com/_mcp/server. # Example representation: Workbook with a Sankey chart (Beta) > Example Sigma code representation of a workbook with a Sankey chart. This documentation describes one or more public beta features that are in development. Beta features are subject to quick, iterative changes; therefore the current user experience in the Sigma service can differ from the information provided in this page. This page should not be considered official published documentation until Sigma removes this notice and the beta flag on the corresponding feature(s) in the Sigma service. For the full beta feature disclaimer, see [Beta features](/docs/sigma-product-releases#beta-features). This is an example representation of a workbook, retrieved using the [Get a workbook](/reference/get-workbook) endpoint with the query parameter `includeContents=true`. Representations like this one can be used to create a workbook from code using the [Create a workbook](/reference/create-workbook) endpoint. Each page in this example library includes the code representation of the workbook and step-by-step instructions to create it in the Sigma UI. Consult this example and others in the [Workbook representation example library](/docs/workbook-representation-example-library) to: * Troubleshoot the formatting of a particular feature in code representation * Relate a feature from the Sigma UI to its representation in code * Provide context to AI tools used to create workbooks from code This example representation cannot be used as-is. All identifying details, such as IDs, names, and URLs, have been replaced with randomized ID values or generic substitutions. The format of these contents, like the length of ID values, is preserved for demonstrative purposes. However, this representation cannot be directly used without modification to the base URL, connection details, and more. For more information, see [Create and manage workbooks from code](/docs/manage-workbooks-as-code). ## System and user requirements To complete the steps in this example, you must meet the user requirements listed below for creating the workbook in the UI and creating it from code. The ability to create this workbook in the Sigma UI requires the following: * You must be assigned an [account type](/docs/account-type-and-license-overview) with the **Create, edit, and publish workbooks** permission enabled. * You must have access to a connection to a data platform. The ability to create a workbook from code requires the following: * You must be assigned an [account type](/docs/account-type-and-license-overview) with the **Create, edit, and publish workbooks** permission enabled. * You must have developer credentials for the Sigma API. For more information, see [Get started with the Sigma REST API](/reference/get-started-sigma-api). This example uses a table from the [Sigma Sample Connection](/docs/sigmas-sample-connection). Your organization might have disabled access to the Sigma sample connection. If so, you can contact an admin to enable it, or use a table from another connection to follow along with this example. ## Create the example workbook in the Sigma UI This example shows a workbook with a Sankey chart that shows how trips flow from the busiest start stations to their end stations. To create this workbook in the Sigma UI: 1. Go to the **Home** page. 2. Select ![](https://sigma-docs-screenshots.s3.us-west-2.amazonaws.com/Icons/button-add.svg) **Create new** > **Workbook**. A new workbook opens. 3. From the **Add element** bar, select **Chart** > **Sankey**. 4. In the **Select source** modal, search for the table `TRIP` in the `EXAMPLES.BIKES` schema. 5. Select the table to use it as the chart source. A blank Sankey chart appears on the workbook canvas. 6. In the editor panel, select **Properties**. 7. For **Stages**, select ![](https://sigma-docs-screenshots.s3.us-west-2.amazonaws.com/Icons/button-add.svg) **Add column** and select *Start Station Name*. 8. For **Stages**, select ![](https://sigma-docs-screenshots.s3.us-west-2.amazonaws.com/Icons/button-add.svg) **Add column** again and select *End Station Name*. The chart now has two stages, so each link represents trips between a start station and an end station. 9. For **Value**, select ![](https://sigma-docs-screenshots.s3.us-west-2.amazonaws.com/Icons/button-add.svg) **Add calculation** and select **Id**. The Sankey chart now shows the flow of trips from start stations to end stations, with the width of each link representing the number of trips. 10. Select the chart, and select ![](https://sigma-docs-screenshots.s3.us-west-2.amazonaws.com/Icons/filter.svg) **Filters...**. 11. Select **Add filter** and select *Start Station Name*. 12. Select **Filter options..** > **Change filter type** > **Top N**. The chart filters to the top 10 busiest start stations, so you can see the flow of trips from the busiest start stations to their end stations. 13. In the document header, select **Save as**. 14. Enter a name for the workbook, such as `sankey-chart`. 15. Select **Save**. ## Get a code representation of this workbook To get a representation of this workbook, follow the steps in [Get the code representation of a workbook](/docs/get-the-code-representation-of-a-workbook). The code representation of this workbook appears like the following: #### YAML representation ```yaml workbookId: 7f8ff7e3-daa9-48a1-a59d-56e9b8d815f0 workbookUrlId: UkiuOrhO4Q5lOeI6iIa0os createdBy: zgzXpTRVbfX4ZE9TEm9q9fUsfXZ5o updatedBy: zgzXpTRVbfX4ZE9TEm9q9fUsfXZ5o createdAt: '2026-09-01T14:49:52.980Z' updatedAt: '2026-09-02T15:41:04.446Z' name: sankey-chart url: https://aws-api.sigmacomputing.com/org-name/workbook/UkiuOrhO4Q5lOeI6iIa0os path: My Documents/ latestVersion: 10 ownerId: zgzXpTRVbfX4ZE9TEm9q9fUsfXZ5o isArchived: false contents: schemaVersion: 1 elements: - id: eTizXgX kind: table source: connectionId: b2af3691-12a0-48fa-a91d-fbe2e1b31627 kind: warehouse-table path: - EXAMPLES - BIKES - TRIP columns: - id: 6DqBgE6Rq formula: '[TRIP/Id]' - id: wOW6NNWOZqI formula: '[TRIP/Duration]' - id: jC0c8h8Ewz3g formula: '[TRIP/Start Date]' - id: cOIGflvCqIlC formula: '[TRIP/Start Station Name]' - id: JpVJowwqZg formula: '[TRIP/Start Station Id]' - id: GyZynaXgfv formula: '[TRIP/End Date]' - id: qQzuJifMd2 formula: '[TRIP/End Station Name]' - id: 3Esuzz9y formula: '[TRIP/End Station Id]' - id: a1ySXDMEm formula: '[TRIP/Bike Id]' - id: Kng0H6Uvst formula: '[TRIP/Subscription Type]' - id: B0QtJd formula: '[TRIP/Zip Code]' order: - 6DqBgE6Rq - wOW6NNWOZqI - jC0c8h8Ewz3g - cOIGflvCqIlC - JpVJowwqZg - GyZynaXgfv - qQzuJifMd2 - 3Esuzz9y - a1ySXDMEm - Kng0H6Uvst - B0QtJd - id: R43yW8Qq kind: sankey-chart source: elementId: eTizXgX kind: table columns: - id: ch_cOIGflvCqIlC formula: '[TRIP/Start Station Name]' - id: ch_qQzuJifMd2 formula: '[TRIP/End Station Name]' - id: RDr75Ovtuk formula: Count([Id]) - id: ch_6DqBgE6Rq formula: '[TRIP/Id]' - id: ch_wOW6NNWOZqI formula: '[TRIP/Duration]' - id: ch_jC0c8h8Ewz3g formula: '[TRIP/Start Date]' - id: ch_JpVJowwqZg formula: '[TRIP/Start Station Id]' - id: ch_GyZynaXgfv formula: '[TRIP/End Date]' - id: ch_3Esuzz9y formula: '[TRIP/End Station Id]' - id: ch_a1ySXDMEm formula: '[TRIP/Bike Id]' - id: ch_Kng0H6Uvst formula: '[TRIP/Subscription Type]' - id: ch_B0QtJd formula: '[TRIP/Zip Code]' stages: - columnId: ch_cOIGflvCqIlC - columnId: ch_qQzuJifMd2 value: columnId: RDr75Ovtuk filters: - id: f1mMYCYadI columnId: ch_cOIGflvCqIlC kind: top-n rankingFunction: rank mode: top-n rowCount: 10 includeNulls: when-no-value-is-selected pages: - id: eKhTktnw name: Page 1 kind: workbook layout: | documentVersion: 10 ``` ## Representing Sankey charts #### Sankey chart representation ```yaml ... id: R43yW8Qq kind: sankey-chart source: elementId: eTizXgX kind: table columns: - id: ch_cOIGflvCqIlC formula: '[TRIP/Start Station Name]' - id: ch_qQzuJifMd2 formula: '[TRIP/End Station Name]' - id: RDr75Ovtuk formula: Count([Id]) - id: ch_6DqBgE6Rq formula: '[TRIP/Id]' - id: ch_wOW6NNWOZqI formula: '[TRIP/Duration]' - id: ch_jC0c8h8Ewz3g formula: '[TRIP/Start Date]' - id: ch_JpVJowwqZg formula: '[TRIP/Start Station Id]' - id: ch_GyZynaXgfv formula: '[TRIP/End Date]' - id: ch_3Esuzz9y formula: '[TRIP/End Station Id]' - id: ch_a1ySXDMEm formula: '[TRIP/Bike Id]' - id: ch_Kng0H6Uvst formula: '[TRIP/Subscription Type]' - id: ch_B0QtJd formula: '[TRIP/Zip Code]' stages: - columnId: ch_cOIGflvCqIlC - columnId: ch_qQzuJifMd2 value: columnId: RDr75Ovtuk filters: - id: f1mMYCYadI columnId: ch_cOIGflvCqIlC kind: top-n rankingFunction: rank mode: top-n rowCount: 10 includeNulls: when-no-value-is-selected ... ```