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JavaScript Data Grid: Sparklines Overview

This section introduces the grid's built-in Sparklines - mini charts that are optimised for grid cells that can be used to provide insights into data trends at a glance. These sparklines can be fully customised to application's requirements.

Sparkline Overview

Enabling Sparklines

To enable sparklines on a particular column, add the agSparklineCellRenderer as shown below:

const gridOptions = {
    columnDefs: [
        {
            field: 'change',
            cellRenderer: 'agSparklineCellRenderer',
        },
        // other column definitions ...
    ],

    // other grid options ...
}

Note in the snippet above that specifying an agSparklineCellRenderer will display the data using the default line sparkline.

The following example shows the minimum configuration required to display data in a sparkline. Note the following:

  • The Change column is configured to use an agSparklineCellRenderer.
  • No sparkline options are supplied to the agSparklineCellRenderer so the default Line Sparkline is used.
  • An array of numbers is supplied as data to the Change column, which means no Data Mapping is required.

Sparkline Customisation

The default Sparkline options act as a good starting point for most applications, however sparklines can be fully customised by overriding the default sparkline options.

Sparklines are customised by supplying sparklineOptions to the cellRendererParams on the Sparkline Cell Renderer as shown below:

const gridOptions = {
    columnDefs: [
        {
            cellRenderer: 'agSparklineCellRenderer',
            cellRendererParams: {
                sparklineOptions: {
                    // Sparkline customisation goes here.
                }
            },
        },
        // other column definitions ...
    ],

    // other grid options ...
}

Each Sparkline type contains specific sparklineOptions that can be overridden and are covered in the following sections:

The following sections are relevant to all sparkline types:

  • Sparkline Data - compares the different data formats that can be supplied to sparklines.
  • Axes Types - compares the different axes types available to sparklines.
  • Sparkline Tooltips - covers the various ways sparkline tooltips can be customised.
  • Points of Interest - shows how points of interest can be formatted on sparklines.

Next Up

Continue to the next section to learn about: Line Customisation.