Trigger a point in xychart from outside

[thomaslein]

Hi, thanks for a awesome library.
I have this usecase and I'm wondering if it's possible.
Is it possible to set a datapoint/index in a xychart from outside the chart?
The usecase is to mouseover one chart and set the same datapoint/index in two other charts so they sync markers on mouseover.

[williaster]

hey @thomaslein thanks for checking out visx. going to convert this to a discussion as it's a usage question rather than an issue. there is support for this advanced use-case, it'd documented in the xychart docs here:

Generally there are two approaches, programmatic triggering as you say (see linked example in docs) or you can actually have multiple charts share an EventEmitter context which is how tooltips are implemented in the chart/which is exposed for advanced use cases like this. there's another discussion with more examples if you want to pursue this #1646

[thomaslein]

It works and it's awesome! Thanks for the help on this @williaster