Skip to content

Commit

Permalink
Documentation updates
Browse files Browse the repository at this point in the history
  • Loading branch information
jwass committed Jan 29, 2024
1 parent 7a02a39 commit bf95d7d
Showing 1 changed file with 2 additions and 2 deletions.
4 changes: 2 additions & 2 deletions format-specs/geoparquet.md
Original file line number Diff line number Diff line change
Expand Up @@ -58,7 +58,7 @@ Each geometry column in the dataset MUST be included in the `columns` field abov
| edges | string | Name of the coordinate system for the edges. Must be one of `"planar"` or `"spherical"`. The default value is `"planar"`. |
| bbox | \[number] | Bounding Box of the geometries in the file, formatted according to [RFC 7946, section 5](https://tools.ietf.org/html/rfc7946#section-5). |
| epoch | number | Coordinate epoch in case of a dynamic CRS, expressed as a decimal year. |
| covering | object | Object containing information like bounding boxes to help accelerate spatial data retrieval |
| covering | object | Object containing bounding box column names to help accelerate spatial data retrieval |


#### crs
Expand Down Expand Up @@ -162,7 +162,7 @@ Note: the value specified in this field should not be confused with the top-leve

### Bounding Box Columns

A bounding box column MUST be a Parquet group field with 4 child fields named `xmin`, `xmax`, `ymin`, and `ymax`. For three dimensions the additional fields `zmin` and `zmax` MAY be present but are not required. The fields MUST be of Parquet type `FLOAT` or `DOUBLE`. The repetition of a bounding box column MUST match the geometry column's [repetition](#repetition). A row MUST contain a bounding box value if and only if the row contains a geometry value. In cases where the geometry is optional and a row not contain a geometry value, the row MUST NOT contain a bounding box value.
A bounding box column MUST be a Parquet group field with 4 child fields named `xmin`, `xmax`, `ymin`, and `ymax`. For three dimensions the additional fields `zmin` and `zmax` MAY be present but are not required. The fields MUST be of Parquet type `FLOAT` or `DOUBLE`. The repetition of a bounding box column MUST match the geometry column's [repetition](#repetition). A row MUST contain a bounding box value if and only if the row contains a geometry value. In cases where the geometry is optional and a row does not contain a geometry value, the row MUST NOT contain a bounding box value.

The bounding box column MUST be at the root of the schema. The bounding box column MUST NOT be nested in a group.

Expand Down

0 comments on commit bf95d7d

Please sign in to comment.