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From "Martin Desruisseaux (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SIS-128) Implements the org.unitsofmeasurement interfaces
Date Tue, 29 Apr 2014 13:05:15 GMT

    [ https://issues.apache.org/jira/browse/SIS-128?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13984269#comment-13984269
] 

Martin Desruisseaux commented on SIS-128:
-----------------------------------------

This task need to be put on standby, since a new JSR for units of measurement has been started:
http://jcp.org/en/jsr/detail?id=363


> Implements the org.unitsofmeasurement interfaces
> ------------------------------------------------
>
>                 Key: SIS-128
>                 URL: https://issues.apache.org/jira/browse/SIS-128
>             Project: Spatial Information Systems
>          Issue Type: Improvement
>          Components: Utilities
>    Affects Versions: 0.3
>            Reporter: Martin Desruisseaux
>
> We needs an implementation of {{org.unitsofmeasurement.Unit}} to be used as a replacement
of JSR-275. This is needed since the JSR-275 specification attempt has been rejected. Some
existing implementations exist, especially the UOMo and JScience projects, but we also have
some legacy classes that we could refactor. A possible advantage of the later approach is
that we have to support some rather particular Unit, like the one used in NetCDF files (e.g.
"degrees_east"), which may be easier in a custom implementation.
> Some useful links:
> * http://www.unitsofmeasurement.org/apidocs/index.html - the interfaces that we would
have to implement.
> * http://www.qudt.org/ - Quantities, Units, Dimensions and Data Types in OWL and XML
(ontology).
> * https://code.google.com/p/unit-ontology/ - apparently the same than above.
> * http://portal.opengeospatial.org/files/?artifact_id=11498 - OGC Best Practice for specifying
UoM in an OGC standard.
> * https://www.seegrid.csiro.au/subversion/xmml/OGC/trunk/ExampleInstances/dictionaries/units.xml
- a dictionary of unit symbols related to OGC standards.
> * http://unitsofmeasure.org/trac/ - UCUM, a text format for units.
> * https://github.com/keilw/mco - A Java script project derived from JSR-275.
> * http://wiki.eclipse.org/Science_IWG - Open Source Initiative for Scientific Development
Tools.
> * http://jscience.org/ - JScience, one of available implementations.
> * http://www.eclipse.org/uomo/ - an other implementation.



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