Hello, I translated some geojson to flatgeobuf where the geojson features have a variable number of properties (e.g. some features have a bunch of translations for the name of a place pulled from OSM).
I noticed in the ogrinfo output that while the summary info has all the fields possible, name: String (0.0) name:ar: String (0.0) name:bn: String (0.0) ...etc... each feature prints out just its actual fields associated with it: OGRFeature(layer):1 name (String) = Huselva LINESTRING (-36.7425039 -54.1973051 ...etc..) I had expected a bunch of NULL values for all the fields not set, much like what QGIS shows or what happens if I translate to e.g. geoparquet. In the flatgeobuf spec, I noticed it supports a per feature schema https://github.com/flatgeobuf/flatgeobuf/blob/3d488b384a911b3a18d8b28ee730fb8f3831a39b/src/fbs/header.fbs#L75 Is ogr taking advantage of this? Or is it just aware that those fields were never set for that feature? I am asking because if I was to create the flatgeobuf directly with OGR, I am not sure if I need to call CreateField on the layer itself for all possible fields, or can I do something per feature? Thanks!
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