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When I export a featureclass to a geopackage (with spatial type 'geopackage') in ArcGIS 10.4, true curves are densified to lines consisting of many short straight segments.

Is this a shortcoming of the export method, or of the capabilities of geopackage? I couldn't find anything about support of curves by geopackage.

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  • If you read geopackage.org/spec you should find that the core standard supports only linear geometry types but the "GeoPackage Non-Linear Geometry Types" extension adds support for CircularString, CompoundCurve, CurvePolygon, MultiCurve, MultiSurface, Curve, and Surface. I do not know what is the level of support in ArcGIS 10.4.
    – user30184
    Commented Apr 24, 2019 at 21:07
  • Gdal 2.x, ogr2ogr seems to write Curves to a Geopackage, so it seems Geopackage supports curves. gdal.org/drv_geopackage.html
    – klewis
    Commented Apr 24, 2019 at 21:26

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