We are using Gantt chart and now we are require to load more data which is nearly 1Million data points.
Gantt chart takes more time to render and the issue is that seems the chart is unusable and hung. Unable to do any action with chart.
So, we tried to use boost module to resolve this issue and we updated our series data from object to array of values since boost requires the data as array.
With boost, we able to load the data quickly but tooltip not showing the points properly when we hover on different points on same x-axis line. It shows the points properly if points in different x-axis line. It seems shows the first point value and not showing the adjacent point values.
After adding tooltip. followPointer, the tooltip moves based on mouse but showing the first value.
To get clear understanding, please see the example chart in jsfiddle: https://jsfiddle.net/PrasathP/9c61xjfy/9/
In above example data, tooltip moves based on hover when zooming but with our real data, the tooltip gets disappeared if we zooming even with option tooltip. followPointer. Please find the snap of gantt chart with our real data on zooming,
Note: we tested with very latest highcharts V9.3.2 and our actual version is V9.0.1.
This chart is very need for our production and we must to use more data (in millions). So, kindly provide a solution to resolve this.
Thanks & Regards,