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From "Martin Desruisseaux (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SIS-356) NetCDF reader should recognize Earth Observation metadata
Date Tue, 05 Sep 2017 14:42:01 GMT

    [ https://issues.apache.org/jira/browse/SIS-356?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16153758#comment-16153758
] 

Martin Desruisseaux commented on SIS-356:
-----------------------------------------

Hello Roxana (no problem Kenneth, thanks for your interest). For familiarizing with the project,
a first step could be to try the [command-line interface|http://sis.apache.org/command-line.html],
in particular the "Extracting ISO 19115 Metadata" example. The tree shows by this example
follows the model defined by ISO 19115. A key concept of Apache SIS is that ISO 19115 is our
pivot metadata model for representing metadata from any sources, including NetCDF. For understanding
ISO 19115, a good source of information is the [NOAA wiki|https://geo-ide.noaa.gov/wiki/index.php?title=Category:ISO_19115].

> NetCDF reader should recognize Earth Observation metadata
> ---------------------------------------------------------
>
>                 Key: SIS-356
>                 URL: https://issues.apache.org/jira/browse/SIS-356
>             Project: Spatial Information Systems
>          Issue Type: Task
>          Components: Storage
>    Affects Versions: 0.7
>            Reporter: Martin Desruisseaux
>            Priority: Minor
>
> The European Space Agency (ESA) published an extension to CF-Convention for Earth Observation
(EO) Metadata. This extension would fit nicely in SIS by completing the [AttributeNames|http://sis.apache.org/apidocs/org/apache/sis/storage/netcdf/AttributeNames.html]
class, which defines the mapping from NetCDF attributes to ISO 19115 metadata. The process
would be:
> * Get the [NetCDF Earth Observation (EO) Metadata Conventions|https://wiki.services.eoportal.org/tiki-download_wiki_attachment.php?attId=3271&download=y]
document (version 1.1.0 published in 2014-03-11). Authors are from CNR - Institute of Atmospheric
Pollution Research.
> * Inspect the NetCDF attributes listed in table and establish a relationship with an
equivalent ISO 19115 attribute when possible. Not all attributes have equivalence; it is okay
to leave attributes unmapped.
> * For each mapped attribute, add a constant in Apache SIS {{AttributeNames}} class.
> * Edit the {{MetadataReader}} class for using those new constants.
> * Add JUnit tests.



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