Hello,
I experimented with the plot.ly toolbox. (https://plot.ly/)
They provide an opensource version of the library for Javascript and other languages.It is easy to use and provides a great collection of chart types. It works well with large data sets. (100000+)
You may have a look, and use this in the dashboards. I like most the “heatmap” chart type.
All functions like zoom, print, snapshot are automatically available.
I am not connected to this company.
Regards
Holger