The layers of the figure
The prebuilt per-layer lookups
Layer id to the dataset indices backing it
The layer the position belongs to
The MAIDR row, or -1 when the event carries pointIndices
The MAIDR column, or -1 when the event carries pointIndices
OptionalpointIndices: readonly number[]For a point cloud, the layer.data indices to outline
The elements to highlight, empty when nothing resolves
Resolve a MAIDR navigation event into the Chart.js active elements that should be highlighted. Returns an array because one position can cover several marks — a scatter column holds every point sharing an X.