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Adds a pool option to the pointer transform, that defaults to true on the tip mark (including markes derived with {tip: true}). Pooled marks show only the closest point, preventing collisions. Non-pooled marks (like crosshair sub-marks) are unaffected. Pooling also handles facet deduplication.
mbostock
requested changes
Mar 17, 2026
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Adds a
pooloption to the pointer transform, that defaults to true on the tip mark (including marks derived with thetip: truemark option). Marks that pool their pointer transform show only the closest point among all marks, preventing collisions. Non-pooled marks (like crosshair sub-marks) are unaffected. This also handles facet deduplication.closes #1835
Enregistrement.de.l.ecran.2026-03-17.a.15.30.41.mp4
You can opt out by setting
pool: false(but why would you?). In the future this could be extended to different named pools (but again, why?).