Make chart more detailed upon clicking on chart

[Julian]

Hey guys,

I'd like to add a feature to my chart where it becomes more detailed (more data points) when a user clicks on the chart and scrubs around.

E.g. initially, the chart has 20 data points. As soon as the user clicks and moves the cursor around, the chart should still visualize the same data, but with more datapoints (e.g. 100). Once the user unclicks, it should have only 20 again, as before.

Any ideas how to implement this?