Setting animation to false breaks line and scatter error bars about chartjs-chart-error-bars HOT 3 CLOSED

I came across this issue due to using chartjs-node-canvas which sets animation to false automatically. Scatter chart error bars aren't showing up, but bar chart error bars work.

Stepping through the code, it looks like the issue is that for scatter and line plots, chart.js has a "directUpdate" mode that gets used when animation is disabled. In this mode, it does not call updateElement() on each element, which results in the custom properties e.g. xMin, xMax not getting transferred from the parsed data objects to the PointWithErrorBar objects.

If I manually disable directUpdate using a step debugger, I was able to get a chart to render with error bars. However I can't figure out a way to prevent directUpdate from being set by changing any configuration. Even if I alter the chartjs-node-canvas library to set animation: true, chart.js will override it, since it detects you aren't in a DOM platform.

So I'm not sure if this can be addressed by a change to the chartjs-chart-error-bars module. I might try forking chart.js and adding an option to disable directUpdate, I think that would probably work.

from chartjs-chart-error-bars.

I can confirm the error bars on scatter plots are working now in 3.8.0. Thank you @sgratzl !!

from chartjs-chart-error-bars.

Thanks, @sgratzl! ✨

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