Fix: Serialize geopandas geometry columns as WKT strings #7923
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## Summary Fixes issue #7918 where geopandas GeoDataFrame geometry columns appeared as empty dictionaries in marimo's table display instead of readable geometry strings. ## Problem When displaying a GeoDataFrame in marimo, the geometry column (which contains shapely geometry objects like Point, Polygon, LineString) was being serialized as empty dicts `{}` instead of proper Well-Known Text (WKT) format strings like `"POINT (-95 37)"`.
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akshayka
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Jan 21, 2026
botterYosuke
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Jan 22, 2026
botterYosuke
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to botterYosuke/marimo
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Jan 23, 2026
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Summary
Fixes issue #7918 where geopandas GeoDataFrame geometry columns appeared as empty dictionaries in marimo's table display instead of readable geometry strings.
Problem
When displaying a GeoDataFrame in marimo, the geometry column (which contains shapely geometry objects like Point, Polygon, LineString) was being serialized as empty dicts
{}instead of proper Well-Known Text (WKT) format strings like"POINT (-95 37)".