Don't display all data points when dataset is big

[Sheldon Ju]

Dear canvasJS team
I’m trying to plot a big dataset(400k data points and 10 lines). The graph becomes very slow and tooltips don’t work consistently. Is there a way to hide some of the data points while zoomed out, but display them when zoomed in?
Thank you

[Shashi Ranjan]

@sheldon-ju,

You can achieve the above requirement with the help of rangeChanged event and by performing data-filtering i.e. add dataPoints on zooming-in and remove dataPoints on zoom out. Please take a look at this JSFiddle for the same.

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Shashi Ranjan
Team CanvasJS

[Sheldon Ju]

Thank you Shashi, this is very useful.