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Add projection v1.2.0 to the list of schema URIs in projection.py #1590

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Add projection v1.2.0 to the list of schema URIs in projection.py #1590

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5f86cfb
Add projection v1.2.0 to the list schema URIs in projection.py
floriandeboissieu Oct 14, 2025
e63ef2b
Add test, migration for proj v1.2.0
jsignell Nov 7, 2025
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21 changes: 19 additions & 2 deletions pystac/extensions/projection.py
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,7 @@
SCHEMA_URIS: list[str] = [
"https://stac-extensions.github.io/projection/v1.0.0/schema.json",
"https://stac-extensions.github.io/projection/v1.1.0/schema.json",
"https://stac-extensions.github.io/projection/v1.2.0/schema.json",
SCHEMA_URI,
]
PREFIX: str = "proj:"
Expand Down Expand Up @@ -467,6 +468,7 @@ class ProjectionExtensionHooks(ExtensionHooks):
"projection",
"https://stac-extensions.github.io/projection/v1.0.0/schema.json",
"https://stac-extensions.github.io/projection/v1.1.0/schema.json",
"https://stac-extensions.github.io/projection/v1.2.0/schema.json",
}
stac_object_types = {pystac.STACObjectType.ITEM}

Expand All @@ -478,12 +480,27 @@ def migrate(

# proj:epsg moved to proj:code
if epsg := obj["properties"].pop("proj:epsg", None):
obj["properties"]["proj:code"] = f"EPSG:{epsg}"
if obj["properties"].get("proj:code", None) is None:
obj["properties"]["proj:code"] = f"EPSG:{epsg}"
elif not obj["properties"]["proj:code"] == f"EPSG:{epsg}":
warnings.warn(
"Both proj:code and proj:epsg are specified and they have "
"conflicting values. This might lead to surprising behavior.",
UserWarning,
)

for key in ["assets", "item_assets"]:
for asset in obj.get(key, {}).values():
if epsg := asset.pop("proj:epsg", None):
asset["proj:code"] = f"EPSG:{epsg}"
if asset.get("proj:code", None) is None:
asset["proj:code"] = f"EPSG:{epsg}"
elif not asset["proj:code"] == f"EPSG:{epsg}":
warnings.warn(
"Both proj:code and proj:epsg are specified and they "
"have conflicting values. This might lead to surprising "
"behavior.",
UserWarning,
)

super().migrate(obj, version, info)

Expand Down
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