[jira] [Updated] (SIS-605) Express subsamplings as longs instead of ints

["Martin Desruisseaux (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SIS-605?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Martin Desruisseaux updated SIS-605:
------------------------------------
    Summary: Express subsamplings as longs instead of ints  (was: Express subsamplings are long instead of int)

> Express subsamplings as longs instead of ints
> ---------------------------------------------
>
>                 Key: SIS-605
>                 URL: https://issues.apache.org/jira/browse/SIS-605
>             Project: Spatial Information Systems
>          Issue Type: Task
>          Components: Storage
>    Affects Versions: 1.1, 1.2, 1.3, 1.4
>            Reporter: Martin Desruisseaux
>            Assignee: Martin Desruisseaux
>            Priority: Minor
>             Fix For: 1.5
>
>
> When reading a raster, an optional subsampling can be specified. In this context, "subsampling" should be understood as a way to express the scale factors, since data stores are allowed to use pyramid levels instead of performing real subsampling on the lowest level.
> In current SIS version, the grid coverage sizes are expressed as {{long}} but the subsampling are specified as a {{int}}. The subsampling should be of the same type as the size (i.e. {{long}}) because when the user requests an overview of a very large coverage, the subsampling factors will be almost as large as the size. For example, for an overview of 100 × 100 pixels, the subsampling will be only 100 times less than the coverage size.



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