Martin Desruisseaux created SIS-427:
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Summary: Need a MathTransform.getFunctionProperties() method
Key: SIS-427
URL: https://issues.apache.org/jira/browse/SIS-427
Project: Spatial Information Systems
Issue Type: Improvement
Components: Referencing
Reporter: Martin Desruisseaux
Assignee: Martin Desruisseaux
The Mollweide projection added by SIS-426 is not _surjective_: not all (_x_,
_y_) values can be mapped to a (_latitude_, _longitude_) values. Consequently
current implementation of {{CRS.suggestCommonTarget(…)}}, which is to suggest
converting projected coordinates to geographic coordinates, may not work for
Mollweide. For that projection, it may be more reliable to convert geographic
coordinates to projected coordinates.
For allowing {{CRS.suggestCommonTarget(…)}} to make a better choice, we need to
know more about the {{MathTransform}} properties. One approach would be to add
a {{getFunctionProperties()}} method which would return an
{{Set<FunctionProperty>}}. This set can tell us if the function is invertible,
injective, surjective or bijective.
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