aggregate_spatial: Clarified that the output geometries are unchang… (#548)

* `aggregate_spatial`: Clarified that the output geometries are unchanged compared to the input geometries. #499

* Added note regarding reprojection

* Update aggregate_spatial.json

* Update aggregate_spatial.json

Author: m-mohr

CHANGELOG.md

@@ -38,6 +38,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `add_dimension`: Clearly define behaviour for adding spatial dimensions
 - `apply_polygon`: Replaced outdated usage of `raster-cube` subtype with `datacube` and dimensions. [#524](https://github.com/Open-EO/openeo-processes/issues/524)
 - `aggregate_spatial` and `load_geojson`: Dimensions must by of type `geometry`, not `geometries`
+- `aggregate_spatial`: Clarified that the output geometries are unchanged compared to the input geometries. [#499](https://github.com/Open-EO/openeo-processes/issues/499)
 - `aggregate_temporal` and `aggregate_temporal_period`: Clarified that the process throws a `DimensionNotAvailable` exception when no temporal dimension exists.
 - `aggregate_temporal_period`: Removed unused exception `DistinctDimensionLabelsRequired`.
 - `aggregate_temporal_period`: Clarified that the definition of weeks follows ISO 8601.

aggregate_spatial.json

@@ -105,7 +105,7 @@
         }
     ],
     "returns": {
-        "description": "A vector data cube with the computed results. Empty geometries still exist but without any aggregated values (i.e. no-data). The spatial dimensions are replaced by a dimension of type 'geometry' and if `target_dimension` is not `null`, a new dimension is added.",
+        "description": "A vector data cube with the computed results. Empty geometries still exist but without any aggregated values (i.e. no-data). The spatial dimensions are replaced by a dimension of type 'geometry' and if `target_dimension` is not `null`, a new dimension is added. The dimension of type `geometry` is unchanged compared to the geometries provided through the parameter `geometries`, especially with regards to its labels (geometries) and reference system.",
         "schema": {
             "type": "object",
             "subtype": "datacube",