The 'Group' type is lacking the 'children' properties needed for the 'Element' type in Kendo UI Charts Drawing when using e.createVisual()

In my Angular 10 project, I utilized the following function to draw Kendo Charts on Donut Chart

  public visual(e: SeriesVisualArgs): Group {
    // Obtain parameters for the segments
    this.center = e.center;
    this.radius = e.innerRadius;
    // Create default visual
    return e.createVisual();
  }

I encountered the error shown below

ERROR in src/app/modules/sidenav/dashboard/dashboard.component.ts:85:5 - error TS2740: Type 'Element' is missing the following properties from type 'Group': children, append, clear, insert, and 2 more.

85     return e.createVisual();
angulartypescriptkendo-uikendo-chartangular10

Answer №1

If you're looking to create a Donut Chart, consider the following tips for customization:

  1. To adjust the thickness of the Donut, utilize the holeSize attribute within the SeriesItemComponent as demonstrated below:

    <kendo-chart-series>
  <kendo-chart-series-item type="donut" [data]="data" [holeSize]="120">
  </kendo-chart-series-item>
</kendo-chart-series>

  2. For center text display, refer to the dedicated documentation on Center Template usage outlined here:

    <kendo-chart>
  <ng-template kendoChartDonutCenterTemplate>
    <h3> $10800.71 </h3>
    <span> Total Payroll Cost </span>
  </ng-template>
</kendo-chart>

  3. Create a custom legend using the visual property of the LegendItemComponent. View an example implementation below:

    <kendo-chart-legend position="bottom">
  <kendo-chart-legend-item [visual]="visual"></kendo-chart-legend-item>
</kendo-chart-legend>
public visual(e: LegendItemVisualArgs) {
  // Custom legend visualization logic here
}

Check out this StackBlitz example showcasing a Kendo UI Donut Chart with customized elements.

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