title: How to implement export to excel functionality for the ag grid having sparkline chart (from highcharts library) integrated?
body: <p>I am having sparkline charts integrated with ag grid and it's working as expected but as per requirement, I also have to implement <em>export to excel functionality which should export all the row details from ag-grid along with the sparkline chart details.</em></p>
  <p><strong>Things tried:</strong></p>
  <p>I have tried most common way to export the details from ag-grid and which is working as expected. Things that I can see while exporting the excel sheet is only the data points values (numbers) that I have passed to plot sparkline chart per row instead of exporting the <strong>HTML of the chart</strong>.</p>
  <p>With the export of data values only, I don't think it gives much detailed information to the user.</p>
  <p><strong>Expected Outcome:</strong></p>
  <p>I want to export the ag grid details along with the sparkline charts <strong>HTML contents</strong>. That simply means, if the contents are exported from Ag-grid having sparkline chart, the actual sparkline chart should be exported instead of data points used to plot charts.</p>
  <p><strong>In common terms, I want to picturise the sparkline chart as it is in the exported sheet instead of showing values in form of numbers</strong></p>
  <p>Is there any way to export entire chart which is already plotted on web app, and I want same to be presented into excel sheet for better representation of sparkline charts when export to excel should happen (<em>highcharts library</em>)?</p>
  <p><strong>Note:</strong>
  I have used <strong>ag-grid</strong> and integrated sparkline charts from <strong>highcharts library</strong>. The entire functionality is implemented with help of <strong>Angular 7</strong></p>