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opengeospatial / geoparquet

Specification for storing geospatial vector data (point, line, polygon) in Parquet
https://geoparquet.org
Apache License 2.0
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What are the Allowed Geometry Types? #119

Closed achapkowski closed 1 year ago

achapkowski commented 1 year ago

The documentation just states that the geometry_type can be list or a single string. Does this mean we can pass the geometry_type as [Point, MultiPoint] or does it have to be a string: "Point,MultiPoint" for multiple geometries?

Also in the md file the allowed geometry enums are not listed.

jorisvandenbossche commented 1 year ago

The documentation just states that the geometry_type can be list or a single string. Does this mean we can pass the geometry_type as [Point, MultiPoint] or does it have to be a string: "Point,MultiPoint" for multiple geometries?

Each string needs to correspond to one of the allowed values, and thus a list can be used to specify multiple types like ["Point", "MultiPoint"]

Also in the md file the allowed geometry enums are not listed.

https://github.com/opengeospatial/geoparquet/blob/753f727eaa8ae74a1bf0f0a5aa674bd9437cb9b4/format-specs/geoparquet.md?plain=1#L113-L118

jatorre commented 1 year ago

So, are we good on this one?

cholmes commented 1 year ago

Closing this, since it seems like we provide enough guidance in the spec itself, but feel free to re-open if there's more we should say.

This could be a good 'sample data' that we provide, a couple geoparquet files that use multiple geometry types, that implementations can use to test against, and also provide complete examples for people.