I have an interface implemented where two different data sets, with the same entities for each, can be put onto the same Timeline chart using a multiple axes Highcharts timeline. For example, if I have 3 entities that I am studying and I have 2 data sets,
I will pass 6 Series objects to the chart's SetSeries method.
However, I've noticed an issue occurring with the chart legend when an entity has null Data for the Series object where that entity is listed twice on the chart legend. The expected behavior that occurs most of the time is that each entity is only listed once
on the legend and clicking that entity name will cause both lines tied to that entity (one for each data set) to disappear or reappear.
In this example, Birthingway and Tulare have no data for the righthand data set and Arizona has no data for the left or right axis data sets.
In this example, the data sets are now on opposite axes. Now, Birthingway and Tulare have no data for the lefthand axis data set, but they are not duplicated in the legend. Like the previous example, Arizona has no data for either data set and it is again duplicated
in the legend.
I am not positive if this is an issue that I can resolve myself or if it is a Highcharts specific bug that should be addressed by one of the developers, so I've come here for assistance in the matter.
Thank you for your time and assistance,