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https://issues.apache.org/jira/browse/SIS-161?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martin Desruisseaux updated SIS-161:
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Summary: CRS.isHorizontalCRS(...) should recognize a wider range of types
(was: CRS.isHorizontalCRS(...) should a wider range of types)
> CRS.isHorizontalCRS(...) should recognize a wider range of types
> ----------------------------------------------------------------
>
> Key: SIS-161
> URL: https://issues.apache.org/jira/browse/SIS-161
> Project: Spatial Information Systems
> Issue Type: Improvement
> Components: Referencing
> Affects Versions: 0.4
> Reporter: Martin Desruisseaux
> Priority: Minor
>
> The {{CRS.isHorizontalCRS(CoordinateReferenceSystem)}} method currently
> returns {{true}} if the given CRS is a two-dimensional {{GeographicCRS}} or a
> {{ProjectedCRS}}, and conservatively returns {{false}} in all other cases. We
> should be able to expand the range of recognized types. One use case is a
> radar station using a polar coordinate system in a {{DerivedCRS}} instance
> based on a projected CRS. The problem is that we do not know if the
> conversion associated to the {{DerivedCRS}} instance is performing a rotation
> along some horizontal axis. For example the {{DerivedCRS}} instance could
> represent an inclined plane.
> The proposed approach is to provide ourselves the {{MathTransform}}
> implementations performing coordinate conversions between various
> {{CoordinateSystem}} types, and check if the {{DerivedCRS}} instance is using
> one of those types. This is not a fully generic approach, but would allows us
> to go some steps further.
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