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https://issues.apache.org/jira/browse/SIS-408?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martin Desruisseaux resolved SIS-408.
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Resolution: Fixed
> Add SpecializableTransform
> --------------------------
>
> Key: SIS-408
> URL: https://issues.apache.org/jira/browse/SIS-408
> Project: Spatial Information Systems
> Issue Type: New Feature
> Components: Referencing
> Affects Versions: 0.8
> Reporter: Martin Desruisseaux
> Assignee: Martin Desruisseaux
> Priority: Major
> Fix For: 1.0
>
>
> Sometime, there is a datum shift grid covering a wide area and smaller datum
> shift grids covering smaller area at finer resolution. Current SIS version
> does not handle those smaller grids (called _"specialization"_ here). We need
> a {{MathTransform}} implementation which delegate to another transform when
> the coordinate is found to be in a given area.
> This is useful not only for datum shift grids, but also for localization
> grids (e.g. in GeoTIFF files) when pixel coordinates of control points in the
> last rows or columns are not spaced in the same way than the first points.
> This happen in Sentinel 1 images for instance.
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