Extend list of format codes. #467
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Please consider #395 (comment) before merging. Thanks. |
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I'd also like to propose these values that I am currently using to distinguish various OGC API / STAC API JSON structures: |
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SWG meeting from 25.11.2024: Peter will add the codes that @fmigneault mentioned here and will merge the PR. |
| @@ -123,6 +123,9 @@ The <<jsonschemavalidation,JSON Schema specification>> defines a https://json-sc | |||
| |http://www.opengis.net/def/format/ogcapi-processes/0/cql2-text-filter |cql2-text |Indicates that the string value is a filter expression encoded using the text representation of the https://docs.ogc.org/is/21-065r2/21-065r2.html[Common Query Language (CQL2)]. | |||
| |http://www.opengis.net/def/format/ogcapi-processes/0/cql2-json-filter |cql2-json |Indicates that the string value is a filter expression encoded using the JSON representation of the https://docs.ogc.org/is/21-065r2/21-065r2.html[Common Query Language (CQL2)]. | |||
| |http://www.opengis.net/def/format/ogcapi-processes/0/collection-id |collection-id |Indicates that the string value is a https://docs.ogc.org/DRAFTS/20-024.html#collection-description[collection identifier] (e.g. a feature collection identifier). | |||
| |http://www.opengis.net/def/format/ogcapi-processes/0/stac-collection |stac-collection |Indicates that the string value is a https://github.com/radiantearth/stac-spec/blob/master/collection-spec/collection-spec.md[STAC collection]. | |||
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I got yet one more to propose while we are at it: stac-items
Just encountered that case earlier.
The idea being, that you can request the STAC Items themselves as application/geo+json.
Because STAC Items have nested media-types as Assets, doing a request with only type is ambiguous (is it the items or the assets they describe?)
ie:
some-input:
collection: https://server.com/stac/api/v1/collection/something
type: application/geo+json # Should this be the Items FeatureCollection, or a Vector file found in Assets?
format: stac-items # specifically asking for the items, needed to disambiguate from OA Featuressome-input:
collection: https://server.com/stac/api/v1/collection/something
type: image/tiff; application=geotiff; profile=cloud-optimized
format: stac-collection # STAC Assets matching the COG media-type
# but why 'stac-collection'? -> properties to find them (therefore, not a OA Coverages)
filter: properties.eo:cloud_cover > 0.5There was a problem hiding this comment.
Relates to crim-ca/weaver#770
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In STAC thats named ItemCollection, so maybe use stac-itemcollection instead?
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And what about a single item or a catalog? We discussed a longer list here:
#428
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Yes, we can align with OpenEO definitions if they actually mean the same.
I'm mostly trying to map with the results from pystac-client operations CollectionClient, CollectionSearch, and ItemSearch.
For the moment format: stac-collection would be the first, and stac-items (=> stac-itemcollection) would be the last (I think?). Is there other representations applicable in STAC?
What if the STAC Assets themselves should be provided, is there a stac-assetcollection or similar that is already defined?
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There's nothing to align to in STAC right now, I think. There's just different specifications which for all there could be a usecase to pass them to processes.
In openEO we just have a generic STAC type (i.e. item, collection, catalog). ItemCollection is missing, not sure whether that's intentional: Open-EO/openeo-processes#523 (but it's also a slightly different usecase, I think).
We discussed that already in another issue, which listed potential options, I think. Here's the list of options again:
- stac -> The union of all of the types below, i.e. any STAC entity
- stac-item -> STAC Item Spec (static or /collections/:id/items/:id)
- stac-collection -> STAC Collection Spec (static or /collections/:id)
- stac-catalog -> STAC Catalog spec (static or API landing page)
- stac-itemcollections -> ItemCollection fragment in STAC API (/collections/:id/item or /search)
- (stac-api -> a STAC API landing page, could potentially be captured by stac-catalog?)
- (stac-collectioncollection -> What you get returned in /collections - but I don't have a usecase for this, so can be omitted)
Providing STAC assets on its own doesn't make a lot of sense to me as usually the assets depend on the STAC container, e.g. if an asset has a relativ link you need to get the self link. Also, STAC asset metadata inherits from the properties/top-level metadata since STAC 1.1. So I'd not define a separate stac-asset format. Better pass the asset key in addition to the STAC entity if you want to process a specific asset.
| @@ -118,6 +118,14 @@ The <<jsonschemavalidation,JSON Schema specification>> defines a https://json-sc | |||
| |http://www.opengis.net/def/format/ogcapi-processes/0/geojson-feature |geojson-feature |Indicates that the object is an instance of a GeoJSON feature http://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/schemas/featureGeoJSON.yaml[(featureGeoJSON.yaml)]. | |||
| |http://www.opengis.net/def/format/ogcapi-processes/0/geojson-geometry |geojson-geometry |Indicates that the object is an instance of a GeoJSON geometry http://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/schemas/geometryGeoJSON.yaml[(geometryGeoJSON.yaml)]. | |||
| |http://www.opengis.net/def/format/ogcapi-processes/0/ogc-bbox |ogc-bbox |Indicates that the object is an instance of an OGC bounding box https://raw.githubusercontent.com/opengeospatial/ogcapi-processes/master/openapi/schemas/processes-core/bbox.yaml[(bbox.yaml)]. | |||
| |http://www.opengis.net/def/format/ogcapi-processes/0/epgc-code |epsg-code |Indicates that the value is a code from the https://epsg.io/[EPSG registry]. | |||
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Typo:
| |http://www.opengis.net/def/format/ogcapi-processes/0/epgc-code |epsg-code |Indicates that the value is a code from the https://epsg.io/[EPSG registry]. | |
| |http://www.opengis.net/def/format/ogcapi-processes/0/epsg-code |epsg-code |Indicates that the value is a code from the https://epsg.io/[EPSG registry]. |
| @@ -118,6 +118,14 @@ The <<jsonschemavalidation,JSON Schema specification>> defines a https://json-sc | |||
| |http://www.opengis.net/def/format/ogcapi-processes/0/geojson-feature |geojson-feature |Indicates that the object is an instance of a GeoJSON feature http://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/schemas/featureGeoJSON.yaml[(featureGeoJSON.yaml)]. | |||
| |http://www.opengis.net/def/format/ogcapi-processes/0/geojson-geometry |geojson-geometry |Indicates that the object is an instance of a GeoJSON geometry http://schemas.opengis.net/ogcapi/features/part1/1.0/openapi/schemas/geometryGeoJSON.yaml[(geometryGeoJSON.yaml)]. | |||
| |http://www.opengis.net/def/format/ogcapi-processes/0/ogc-bbox |ogc-bbox |Indicates that the object is an instance of an OGC bounding box https://raw.githubusercontent.com/opengeospatial/ogcapi-processes/master/openapi/schemas/processes-core/bbox.yaml[(bbox.yaml)]. | |||
| |http://www.opengis.net/def/format/ogcapi-processes/0/epgc-code |epsg-code |Indicates that the value is a code from the https://epsg.io/[EPSG registry]. | |||
| |http://www.opengis.net/def/format/ogcapi-processes/0/wkt2-def |wkt2-def |Indicates that the string value is a https://docs.ogc.org/is/18-010r11/18-010r11.pdf[well-known text representation of a coordinate reference system]. | |||
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Maybe wkt2-definition? Then it would be aligned with openEO.
| |http://www.opengis.net/def/format/ogcapi-processes/0/wkt2-def |wkt2-def |Indicates that the string value is a https://docs.ogc.org/is/18-010r11/18-010r11.pdf[well-known text representation of a coordinate reference system]. | |
| |http://www.opengis.net/def/format/ogcapi-processes/0/wkt2-definition |wkt2-definition |Indicates that the string value is a https://docs.ogc.org/is/18-010r11/18-010r11.pdf[well-known text representation of a coordinate reference system]. |
Closes #395