Implement Extension: Render (#1464) (#1465)

* Initial implementation of render extension

* Return Render objs from renders getter

* Add closing greater than symbol to Render repr

* Fix instance type check logic

* Add render extension tests

* Remove item-assets and virtual assets extensions

* Add docstrings to render extension

* Replace Landsat-8 example Item with Sentinel-2 Item

* Remove validation tests

* Remove other extensions, simplify Item

* Update render extension for v2.0.0 conformance

* Add render test episodes

* Add #1465 render extension

* Fix references to xarray in docstrings

Author: bmcandr

CHANGELOG.md

@@ -5,6 +5,7 @@
 ### Added
 
 - Top-level `item_assets` dict on `Collection`s ([#1476](https://github.com/stac-utils/pystac/pull/1476))
+- Render Extension ([#1465](https://github.com/stac-utils/pystac/pull/1465))
 
 ### Changed
 

pystac/extensions/ext.py

@@ -20,6 +20,7 @@
 from pystac.extensions.pointcloud import PointcloudExtension
 from pystac.extensions.projection import ProjectionExtension
 from pystac.extensions.raster import RasterExtension
+from pystac.extensions.render import Render, RenderExtension
 from pystac.extensions.sar import SarExtension
 from pystac.extensions.sat import SatExtension
 from pystac.extensions.scientific import ScientificExtension
@@ -44,6 +45,7 @@
     "pc",
     "proj",
     "raster",
+    "render",
     "sar",
     "sat",
     "sci",
@@ -66,6 +68,7 @@
     PointcloudExtension.name: PointcloudExtension,
     ProjectionExtension.name: ProjectionExtension,
     RasterExtension.name: RasterExtension,
+    RenderExtension.name: RenderExtension,
     SarExtension.name: SarExtension,
     SatExtension.name: SatExtension,
     ScientificExtension.name: ScientificExtension,
@@ -118,6 +121,10 @@ def cube(self) -> DatacubeExtension[Collection]:
     def item_assets(self) -> dict[str, ItemAssetDefinition]:
         return ItemAssetsExtension.ext(self.stac_object).item_assets
 
+    @property
+    def render(self) -> dict[str, Render]:
+        return RenderExtension.ext(self.stac_object).renders
+
     @property
     def sci(self) -> ScientificExtension[Collection]:
         return ScientificExtension.ext(self.stac_object)
@@ -172,6 +179,10 @@ def pc(self) -> PointcloudExtension[Item]:
     def proj(self) -> ProjectionExtension[Item]:
         return ProjectionExtension.ext(self.stac_object)
 
+    @property
+    def render(self) -> RenderExtension[Item]:
+        return RenderExtension.ext(self.stac_object)
+
     @property
     def sar(self) -> SarExtension[Item]:
         return SarExtension.ext(self.stac_object)