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https://issues.apache.org/jira/browse/SIS-176?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martin Desruisseaux closed SIS-176.
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> Provide an optimized MathTransform implementation for diagonal matrices
> -----------------------------------------------------------------------
>
> Key: SIS-176
> URL: https://issues.apache.org/jira/browse/SIS-176
> Project: Spatial Information Systems
> Issue Type: Improvement
> Components: Referencing
> Affects Versions: 0.6
> Reporter: Martin Desruisseaux
> Assignee: Martin Desruisseaux
> Priority: Minor
> Fix For: 0.7
>
>
> {{ProjectiveTransform}} handles arbitrary matrices in a generic way. However
> in practice, many matrices are diagonal + a translation transform. We may get
> some performance improvement if we write a specialized transform class for
> such matrices, because it would replace a O(_n_²) operation by a O(_n_) one
> (_n_ is the matrix size).
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