Whether an appended point targets what the user is currently focused on:
the active subplot, the active layer, and — for nested multi-series
layers, where each series streams its own point per tick — the active
series. Used to scope monitor announcements and sliding-window cursor
shifts to the focused data, so multi-layer/multi-series ticks never
produce overlapping output.
Flat layers ignore the appended row: there it is an announce
coordinate (e.g. a candlestick OHLC section), not a series index.
col is never checked — it is the new point's position, not a focus
requirement; monitoring means hearing new points on the focused
layer/series wherever the user's cursor sits along it.
Whether an appended point targets what the user is currently focused on: the active subplot, the active layer, and — for nested multi-series layers, where each series streams its own point per tick — the active series. Used to scope monitor announcements and sliding-window cursor shifts to the focused data, so multi-layer/multi-series ticks never produce overlapping output.
Flat layers ignore the appended
row: there it is an announce coordinate (e.g. a candlestick OHLC section), not a series index.colis never checked — it is the new point's position, not a focus requirement; monitoring means hearing new points on the focused layer/series wherever the user's cursor sits along it.