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https://issues.apache.org/jira/browse/SIS-496?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Martin Desruisseaux closed SIS-496.
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> GridCoverage.forConvertedValues(true) sometime creates an image that can not
> store NaN values
> ---------------------------------------------------------------------------------------------
>
> Key: SIS-496
> URL: https://issues.apache.org/jira/browse/SIS-496
> Project: Spatial Information Systems
> Issue Type: Task
> Components: Features
> Affects Versions: 1.0
> Reporter: Martin Desruisseaux
> Assignee: Martin Desruisseaux
> Priority: Major
> Fix For: 1.1
>
>
> A call to {{GridCoverage.forConvertedValues(true)}} is supposed to create a
> {{GridCoverage}} where all sample values have been converted to "geophysics"
> values (i.e. values in the units of measurement given by
> {{SampleDimension.getUnits()}}). If the values before conversion had some
> sentinel values used for missing data (e.g. "999 = no data"), then those
> values shall be converted to NaN values. However in Apache SIS 1.0, the
> {{forConvertedValues(true)}} method sometime fails to recognize that it needs
> to change the image data type from an integer type to a floating point type
> in order to be able to store NaN values.
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