wgtmac commented on code in PR #240:
URL: https://github.com/apache/parquet-format/pull/240#discussion_r1922976399
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LogicalTypes.md:
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@@ -599,6 +599,45 @@ optional group variant_shredded (VARIANT) {
}
```
+### GEOMETRY
+
+`GEOMETRY` is used for geometry features in the Well-Known Binary (WKB) format
+with linear/planar edges interpolation. It must annotate a `BYTE_ARRAY`
+primitive type. See [Geospatial.md](Geospatial.md) for more detail.
+
+The type has two type parameters:
+- `crs`: An optional string value for CRS. If unset, the CRS defaults to
+ "OGC:CRS84", which means that the geometries must be stored in longitude,
+ latitude based on the WGS84 datum.
+- `crs_encoding`: An optional enum value to describes the encoding used by the
Review Comment:
This is the only thing that I am hesitant to keep it consistent with the
Iceberg PR. The mapping between them follows the table below:
| Iceberg | Parquet |
|----------|----------|
| `$type` | `crs_encoding` |
| `$content` | `crs` |
The reason is to provide a chance for non-Iceberg use cases to write full
projjson content to the `crs` field. But this is not a strong opinion. Let me
know what you think.
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