[OSGeo-Standards] An idea about a compressed binary geometry format

[Puneet Kishor]

Where does TopoJSON fit in this picture?



--
Puneet Kishor
Policy Coordinator for Science and Data
Creative Commons

On Aug 20, 2013, at 9:01 PM, Jody Garnett <jody.garnett at gmail.com> wrote:

> Sounds interesting, any alternative to BinaryXML would be welcome.
> 
> The header of Binary XML was very complicated, extending into information such as endian order. I got the impression it was set up around with a server bias. The result was a specification which was difficult to implement as a client, and has seen only one implementation in open source products I am aware of (in the gvSig community).
> 
> 
> 
> On Tue, Aug 20, 2013 at 6:27 AM, Nicklas Avén <nicklas.aven at jordogskog.no> wrote:
>> Hallo
>> 
>> I do not know if this list is the right place so that will be my first
>> question.
>> 
>> I have a naive idea about a compressed binary format for geometries.
>> 
>> I have done some work to sketch what it is about.
>> 
>> The name so far is TWKB (Tiny WKB)
>> 
>> Can this list be the right place to discuss this format. It is just an
>> embryo, and my hope is that it can be something designed by and hard
>> connected to the FOSS4G-community.
>> 
>> 
>> What is done is:
>> 
>> A draft of a spec:
>> https://github.com/nicklasaven/TWKB/blob/master/twkb.md
>> 
>> including ideas from Evan Rouault and Oliver Tonnhofer
>> 
>> 
>> Demos:
>> Streaming TWKB from PostGIS to Leaflet via websocket.
>> http://178.79.156.122/twkb_node/
>> 
>> Streaming TWKB-aggregates (tiles created on the fly) from PostGIS to
>> Leaflet
>> http://178.79.156.122/twkb_agg
>> 
>> A page to compare twkb in timing and size with geoJSON directly from
>> PostGIS.
>> http://178.79.156.122/twkb_test
>> 
>> 
>> Examples of implementation.
>> The PostGIS part is in the trunk:
>> http://svn.osgeo.org/postgis/trunk/
>> 
>> The client parts is exemplified here:
>> https://github.com/nicklasaven/twkb_web
>> 
>> 
>> So, first, can this list host discussions about TWKB (or whatever name
>> it gets)?
>> If not where should it go?
>> 
>> Second, any feedback is very welcome
>> 
>> 
>> 
>> Best Regards
>> 
>> Nicklas Avén
>> 
>> _______________________________________________
>> Standards mailing list
>> Standards at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/standards
> 
> _______________________________________________
> Standards mailing list
> Standards at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/standards
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/standards/attachments/20130820/28807eb2/attachment.html>