Hello
Le 22/07/13 19:41, Nadeem Anjum a écrit :
I will certainly have a look at SIS supported format like a Shapefile or
NetCDF and see if they serve our needs better.
Currently, the NetCDF code is only a metadata reader. So it is probably
not yet of much use as a data storage format. The Shapefile code still
on a branch - I plan to help with the merge to trunk after I finished
the SIS 0.3 release and updated the web site.
What SIS can provide is a reader and writer of metadata in a XML format
conformant to an international standard. We can see that as a
bibliographical card. For example if "Joe Smith" publishes a map of
"amount of car accidents" in area 45°N to 50°N and 10°E to 15°E in
January 2012, one can write (from memory - if some convenience
constructors are missing, one can always use setter methods):
DefaultExtent extent = new DefaultExtent();
extent.getGeographicElements().add(new DefaultGeographicBoundingBox(10,
15, 45, 50));
extent.getTemporalExtents().add(new DefaultTemporalExtent(...)); // ...
incomplete example ...
DefaultMetadata metadata = new DefaultMetadata(
new DefaultResponsibleParty("Joe Smith"),
new Date(), // Use today date as the date when the metadata has
been created.
new DefaultDataIdentification(
new DefaultCitation("Amount of car accidents"),
"An optional short description (abstract) about the map.",
Locale.ENGLISH, TopicCategory.SOCIETY)));
Now the interesting part is:
XML.marshall(metadata, new File("myMetadata.xml"));
This will create an ISO 19139 compliant XML file or your metadata. This
file should be readable by many geo-catalogue, both commercials and
other open source projects.
Conversely, you can read such XML file with XML.unmarshall(...) and use
getter methods for fetching the above information.
Martin
