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From "Martin Desruisseaux (Jira)" <j...@apache.org>
Subject [jira] [Created] (SIS-483) Some CoordinateOperation created from EPSG database get wrong name/identifier/remarks
Date Sun, 08 Dec 2019 16:02:00 GMT
Martin Desruisseaux created SIS-483:
---------------------------------------

             Summary: Some CoordinateOperation created from EPSG database get wrong name/identifier/remarks
                 Key: SIS-483
                 URL: https://issues.apache.org/jira/browse/SIS-483
             Project: Spatial Information Systems
          Issue Type: Task
          Components: Referencing
    Affects Versions: 1.0
            Reporter: Martin Desruisseaux
            Assignee: Martin Desruisseaux
             Fix For: 1.1


Calls to {{CRS.findOperation(sourceCRS, targetCRS)}} sometime produces a {{CoordinateOperation}}
with wrong metadata (name, identifiers, remarks, scope). For example requesting an operation
from EPSG::4202 to EPSG::4283 should produce the following operation:

{noformat}
CoordinateOperation["AGD66 to GDA94 (19)",
  SourceCRS[GeodeticCRS["AGD66", (...snip...)],
  TargetCRS[GeodeticCRS["GDA94", (...snip...)],
  Method["Coordinate Frame rotation (geog2D domain)"], (...snip...)],
  OperationAccuracy[0.5],
  Scope["Recommended for mid-accuracy use in A.C.T. 1m accuracy."],
  Area["Australia - Australian Capital Territory."],
  BBox[-35.93, 148.76, -35.12, 149.40],
  Id["EPSG", 5827, "9.7", URI["urn:ogc:def:coordinateOperation:EPSG:9.7:5827"]],
  Remark["Replaces nationally-derived transformation code 1458."]]
{noformat}

But we get instead the name _"Ellipsoidal 2D CS. Axes: longitude, latitude. Orientations:
east, north. UoM: degree"_ together with identifier and remarks of EPSG::6424 coordinate system.
The accuracy, scope, area and bounding box are lost. The bug is in {{EPSGDataAccess}} where
metadata are accidentally overwritten before we finished to construct the {{CoordinateOperation}}.
This bug affects only metadata; the coordinate operation parameters are unaffected so the
numerical results of coordinate operations should be the same.




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