Large dataset performance

[jvolf-zolo]

We're trying to use Chartjs with a large amount of data (up to 100k data points), and when the chart updates it is locking up the browser. Is there a maximum number or data points that can be used?

Thanks for your help.

[etimberg]

@jvolf-zolo you should probably limit the number of points to width in px * 4 as a maximum. At the moment, we don't have any built-in decimation so you would need to decimate before sending data to the chart.

It might be worthwhile to build a plugin that does decimation as part of the update process

[etimberg]

Closing as answered. For further questions, it is probably best to answer on our slack channel

[CAPTelmo2165]

@etimberg I'm trying to use chartjs to plot chromatography data (so lots of points) and wondered if you could elaborate a little more on the 'width in px * 4' approach you mentioned above please?

Also, I have a lot of zeros in my data and the above algorithm suggested by @bbb31 seems to fall foul of a divide by 0. If anyone could help me adjust it to get around that I'd be most grateful.