Generate Chart Block

Create charts in your AI Workers

The Generate Chart Block creates a chart image based on JSON-formatted data, allowing you to dynamically generate visualizations in your workflows. The resulting image URL can be saved as a variable for further use in the workflow.

Configurations

Chart Data

Provide the data for the chart in valid JSON format. This must follow the data object structure as used in Chart.js.

Width and Height

Specify the dimensions of the chart in pixels:

  • Width: The horizontal size of the chart.

  • Height: The vertical size of the chart.

Default dimensions are 500x300.

Output Variable

Creates a new variable and saves the chart image URL to it. Enter a variable_name ****to store the image URL for later use in the workflow.

How to Generate Chart Data

1. Select a Chart Template

Visit QuickChart Gallery, where you can browse a variety of chart examples. Open a chart you like, then locate the data object in the chart configuration.

2. Copy the data Object

Only copy the portion labeled as data from the chart’s JSON.

3. Convert to JSON

Some chart examples are provided in plain JavaScript objects instead of JSON. To ensure compatibility:

  1. Paste the data object into ConvertSimple: JavaScript to JSON Converter.

  2. Review the output on the right side to confirm proper JSON formatting.

  3. Copy to Clipboard.

Example JSON Data for a Bar Chart:

{
  "labels": [
    "January",
    "February",
    "March",
    "April",
    "May",
    "June",
    "July"
  ],
  "datasets": [
    {
      "label": "Dataset 1",
      "backgroundColor": "rgba(255, 99, 132, 0.5)",
      "borderColor": "rgb(255, 99, 132)",
      "borderWidth": 1,
      "data": [
        -31,
        -70,
        -30,
        -33,
        -9,
        14,
        -41
      ]
    },
    {
      "label": "Dataset 2",
      "backgroundColor": "rgba(54, 162, 235, 0.5)",
      "borderColor": "rgb(54, 162, 235)",
      "borderWidth": 1,
      "data": [
        73,
        41,
        29,
        61,
        -65,
        59,
        38
      ]
    }
  ]
}

4. Paste JSON into the Chart Data Configuration

  • Open the Manual Input field for the corresponding chart type inside the app.

  • Paste the converted JSON data into the Chart Data configuration.

View Chart.js Docs to learn more about generating JSON for your charts →

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