Last week I gave my first talk about TWKB. One good thing about presenting what you are doing is that it makes you actually do it.
So, what is new?
- TWKB is in PostGIS trunk! ThatÂ means it will be included in PostGIS 2.2.
- ID is optional in the spec. In the PostGIS implementation that means that if you don’t ad an ID there will be no space occupied for an ID. A minimal point is then only 4 bytes.
- The one and only serialization method is VarInt, the same way as integers gets serialized in proto buffers.
- The demo page http://220.127.116.11/twkb_test is refreshed and php-examples is added to see the effect of compressing geoJSON compared to twkb. More about that in a separate blog post