VisualMelon

I'm afraid the existing tracker implementation doesn't support this support of change well; I suspect it would be easiest to write a completely new one with a custom `PlotController`. That...

This is a common feature of many other plotting libraries: we should consider providing some built in support for this, or generally a more flexible tracker system.

This doesn't sound like the same issue as that linked, though it may be the same exception. Can you confirm which version of OxyPlot you are using, and explain when...

@wangwendong-code Make sure you are taking the `PlotModel.SyncRoot` when updating data in an existing series, and calling `PlotModel.InvalidatePlot(true)` after changing any data or adding/removing any series. The exception looks like...

@wangwendong-code `true` requests an update of everything; `false` does not: indeed, that example should probably be `true`. It also really ought to be taking the `SyncRoot` when changing the series...

Linking #1814

Exposing this sort of thing is definitely something I'd like to look into. There is additional discussion in #1657

I wouldn't want to expose `SeriesPostMap` in its current state. We need a more comprehensive design that includes e.g. showing non-series items on the legend/multiple entries per series. If there...

Outstanding questions: - Do we want polygons to have holes in them? If so, how do we want to represent this? - Should we have an outline tracker? Outstanding problems:...

There are issues with excessively large numbers as well. This will need a bit of thought I expect. Is there a specific reason you need `DateTimeAxis` rather than `TimeSpanAxis`? From...