Join GitHub today
GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together.Sign up
GitHub is where the world builds software
Millions of developers and companies build, ship, and maintain their software on GitHub — the largest and most advanced development platform in the world.
Make non-spatial tables discoverable #221
The request calls for supporting non-spatial tables in a GeoPackage . An Extended GeoPackage includes elements that are outside the GeoPackage Core Specification. This is perfectly appropriate, and in many cases encouraged. There is nothing keeping the GeoPackage producer from adding additional tables (whatever the reason) and calling the output file an Extended GeoPackage.
The real issue is discoverability. Some applications do not know how to find these tables inside a GeoPackage. It may be possible for the user to open them manually, but that is unreasonable if there are a large number of tables. A better solution would be to make those tables discoverable.
A simple extension such as the following would support this.
If desired, this extension could also work with the Schema Extension.
In addition, such a table could get a row in
This approach would allow clients familiar with the extension to discover the data quite easily. The
Based on SWG discussions, I think we probably will not end up doing what is suggested above. Instead, we are leaning towards the following:
This will probably be resolved at the next TC.
Hi @jyutzler I see that 1.2 is out for public comment.
Can you please explain why the approach of using "attributes" for the data_type rather than the already in use "aspatial" from the http://www.gdal.org/geopackage_aspatial.html extension?
Functional the approaches are for all intensive purposes the same. The proposal in 1.2 will likely make more effort for software implementations already in play and also mean that dataset will have be re-created. Note our NZ main geospatial portal https://data.linz.govt.nz has been using this aspatial extension for about 2 years.