Gets the chart metrics for passing to WebChartViewer.ChartMetrics
to support viewports for web applications.
This method is not necessary if you use BaseChart.makeWebImage
to pass the chart to WebChartViewer
, as the WebImage already includes the chart metrics. However, if you pass the chart to WebChartViewer or RazorChartViewer as a temporary image file (eg. using BaseChart.makeTmpFile
), then to support viewports, it is necessary to pass the chart metrics using this method.
The format of the chart metrics is not published.
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