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Show pre-1970 features in TimestampedGeoJson - #2303

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xecanto wants to merge 1 commit into
python-visualization:mainfrom
xecanto:fix-timestamped-geojson-pre-1970
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xecanto wants to merge 1 commit into
python-visualization:mainfrom
xecanto:fix-timestamped-geojson-pre-1970

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@xecanto

@xecanto xecanto commented Oct 17, 2026

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Closes #1205

Without a duration, Leaflet.TimeDimension filters features with a lower bound of 0, so a feature whose times are all before 1970 is never drawn. Upstream still does this and has had no release since 2019, so this overrides _getFeatureBetweenDates on the layer to use -Infinity when there is no duration.

Without a duration, Leaflet.TimeDimension uses 0 as the lower bound when
it filters features, so a feature whose times are all before 1970 is
never drawn. Use -Infinity instead when there is no duration.

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Animated markers missing when using pre1970 dates in TimestampedGeoJson

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