#35058: Update GDAL integration
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Reporter: David Smith | Owner: nobody
Type: Uncategorized | Status: new
Component: GIS | Version: 4.2
Severity: Normal | Keywords:
Triage Stage: Unreviewed | Has patch: 0
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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During the GDAL 2.x and 3.x releases GDAL has expanded its public entry
points, added new features. While one of these new features is curved
geometries #34406 I think we should conduct a review and consider if new
items should be added to Django. Here's a few specific items to start
with:
**OGR_G_CoordinateDimension**
[https://gdal.org/api/vector_c_api.html#_CPPv428OGR_G_GetCoordinateDimension12OGRGeometryH
OGR_G_CoordinateDimension ] is deprecated in favour of
`OGR_G_CoordinateDimension()`, `OGR_G_Is3D()` and `OGR_G_IsMeasured()`.
**OGRwkbGeometryType**
Support should be added to understand a wider scope of WKT inputs. For
example [https://en.wikipedia.org/wiki/Well-
known_text_representation_of_geometry `POINT ZM (1 1 5 60)`] is valid but
currently results in an error. ( `Invalid OGR Integer Type: 3001`).
I think maybe this is because new WKB types are supported see
OGRwkbGeometryType : https://gdal.org/doxygen/ogr__core_8h.html and
https://github.com/OSGeo/gdal/blob/62c1489feab9312d0468abde0ad13d7b35ce27f7/ogr/ogr_core.h#L529.
This likely needs to be fixed before `OGR_G_CoordinateDimension`. (You
can't write a test for `OGR_G_IsMeasured` without first creating a
geometry with a measure)
**OGR_G_CreateFromWkbEx**
[https://gdal.org/api/vector_c_api.html#_CPPv421OGR_G_CreateFromWkbExPKv20OGRSpatialReferenceHP12OGRGeometryH6size_t
OGR_G_CreateFromWkbEx] is added in GDAL 3.3. I think we should prefer this
over the existing `OGR_G_CreateFromWkb` when available. The difference is
the new method supports large (2gb+) inputs. In 3.3+ the old method now
raises and error suggesting use of the new method, and was unsupported in
previous versions.
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Ticket URL: <https://code.djangoproject.com/ticket/35058>
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