How do you switch the chart type by clicking on the dropdown menu in Angular and TypeScript, using Highcharts?

Struggling to figure out how to change the chart type in an Angular component typescript file when clicking on a dropdown. Here's what I have so far:

Any ideas why it's not working?

onOptionsSelected(value:string){
    console.log("the selected value is " + value);
    if(value="line"){
     
       this.showChart1();
    }
    else if(value=="bar"){
        this.chartData.destroy();
        this.showChart2();
    }
    else if(value=="area"){
    
      this.showChart3();
    }
    else if(value=="column"){
     
      this.showChart4();
    }
}

Answer №1

If you visit the official wrapper repository, there is a demonstration available that showcases the optimal method for updating the chart. By ensuring that the updateFlag is correctly set, all you need to do is update the chartOptions:

handleUpdate() {
  this.chartOptions.series[0] = {
    type: this.chartOptions.series[0].type === 'column' ? 'line' : 'column',
  };

  this.updateFlag = true;
}

Check out the Demo here: https://stackblitz.com/edit/highcharts-angular-update-optimal-way-pjgqgg

For more information, refer to the documentation at: https://github.com/highcharts/highcharts-angular#options-details

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