There is also a OSciM TileStache Provider

[hjanetzek]

Just in case you didnt saw it already: https://github.com/jeffdameth/TileStache/blob/master/TileStache/OSciMap/TileData.proto contains the protocol definition.
From looking at the code I was wondering why you implemented the parser analog to oscim MapDatabase instead of using the pbf code generator. Needles to say that I'm thrilled that you write a implementation for mapnik which was also somewhere on my want-todo list :)

The 0.2 protocol is still inofficial (i.e. not enabled in the apk) if you have suggestions for improvement please let me know. One thing I would like to change is instead of having a fixed list of keys and common tags to transmit them with tile 0/0/0 for each map.

[hjanetzek]

oh, there is also a start of documentation for the protocol, trying to imitate the tounge of a RFC..
http://city.informatik.uni-bremen.de/~jeff/oscim-draft.txt

[artemp]

Thanks for pointing me in the right direction! . I only saw
https://github.com/artemp/VectorTileMap/blob/pre-lib/VectorTileMap/TileData.proto which didn't match oscim or pbf MapDatabase.java. I guess I've learnt how protobuf works internally now :).

So https://github.com/jeffdameth/TileStache/blob/master/TileStache/OSciMap/TileData.proto is 0.2 protocol ? Or am I missing something.

Not having a fixed list of key=val would be great. Have you thought about transmitting styling information to the client rather then OSM tags ?

Also, what are your thoughts about using proto-buf based protocol for browser based rendering ?

Thanks for the great app!

[hjanetzek]

On Sun, Nov 25, 2012 at 5:10 PM, Artem Pavlenko [email protected]:

Thanks for pointing me in the right direction! . I only saw

https://github.com/artemp/VectorTileMap/blob/pre-lib/VectorTileMap/TileData.protowhich didn't match oscim or pbf MapDatabase.java. I guess I've learnt how
protobuf works internally now :).

At least when using pbf with Android a custom parser is definitely of
advantage, having looked at the code that the generator spits out...

So
https://github.com/jeffdameth/TileStache/blob/master/TileStache/OSciMap/TileData.protois 0.2 protocol ? Or am I missing something.

yes, it's the current version read by oscim.MapDatabase and used when
choosing OpenScienceMap2 as Map mode.

Not having a fixed list of key=val would be great. Have you thought
about transmitting styling information to the client rather then OSM tags ?

you mean using generalized categories instead of osm tags? this is already
possible by changing the render-theme.

Also, what are your thoughts about using proto-buf based protocol for
browser based rendering ?

I don't see any problems with it. it would make sense to not create tiles
twice. Though for javascript I would probably use a pbf code-generator. As
we had tiles stored in PostGIS already and I'm not used to javascript it
was easier to write a TileStache json provider that can be used for
kothic-js http://city.informatik.uni-bremen.de/~jeff/kothic/debug/. If you
want to test oscim-pbf in a browser the implementation in kothic-js should
be straight forward. when adding webgl renderer and proper themeing it
might actually become quite nice :)

Thanks for the great app!

Thank you! code-wise it is still rough on many edges as I'm working on too
many things concurrently. don't hesitate to report issues when testing it
with your tile-server.

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