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From "Martin Desruisseaux (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SIS-117) Allow definition of custom CRS by properties files
Date Tue, 06 Aug 2013 10:09:47 GMT
Martin Desruisseaux created SIS-117:
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             Summary: Allow definition of custom CRS by properties files
                 Key: SIS-117
                 URL: https://issues.apache.org/jira/browse/SIS-117
             Project: Spatial Information Systems
          Issue Type: New Feature
          Components: Referencing
            Reporter: Martin Desruisseaux
            Priority: Minor


Coordinate Reference System (CRS) definitions will be provided by the EPSG database. However
we need an easy for allowing users to provide their own CRS, because updating the EPSG database
is uneasy. One of the easiest way is to provide a list of CRS as plain _key_ - _value_ pair,
where the _key_ is the code and the _value_ is the CRS in WKT (Well Known Text) format. Such
pairs can be provided in two ways:

* As {{*.properties}} files
* In the PostGIS {{spatial_refsys}} table.

This issue is only about properties files.

The above CRS codes are valid only in a namespace. The easiest way to specify the namespace
would be to use the name of the properties file. So a {{“custom.properties”}} file might
define the CRS in the {{CUSTOM}} namespace.

One open question is where (in which directory) to put those files.


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