The Million-Row Crossfilter Explorer turns one million GPU-resident records into an interactive, linked-view dashboard. A geographic map, a detailed scatterplot, three histograms for value, risk, and hour, and categorical cohorts all describe the same source rows. Brush the map to update every other view, select a histogram range to narrow the visible points, or apply a preset brush to inspect a meaningful slice immediately. Multiple active dimensions intersect without moving those rows back to the CPU.

The example is built on the optional @luma.gl/experimental/luxfilter entry point. Each dimension evaluates its current range or rectangular bounds into a source-aligned GPU mask. LuxFilter combines those masks, updates linked histograms and grouped summaries, and publishes compacted, stable source-row identifiers for downstream consumers on one reusable GPUCommandGraph. The map and scatterplot renderer draws source rows directly using the shared, source-aligned selection mask, preserving dimmed context around matching rows.

Histogram and categorical views exclude their own selection when presenting an available distribution. This preserves the familiar crossfilter interaction: dragging a histogram brush keeps the surrounding population visible while the map, scatterplot, and unrelated distributions update immediately. Views that need their own predicate can opt in explicitly.

The million-point figure describes resident source records, not a claim that every record survives every brush or is redrawn in every pass. Source columns, dimension predicates, selected-row masks, grouped aggregates, histogram bins, and compacted visible identifiers stay on the GPU. Pointer interactions update only small selection-control buffers; the previously compiled command graph can then be encoded again without rebuilding source storage or synchronizing the complete dataset. Only the displayed histogram bins, grouped counts, and selected-row total are copied into one compact summary readback. The map and scatterplot redraw when selection or layout changes, keeping the GPU queue available for interactive filtering instead of continuously redrawing static million-point clouds.