[Gdal-dev] Please suggest a vector format for wireless application

[Frank Warmerdam]

Fu Chen wrote:
> Hi!
> I wanna create a simple application for traffic management department in my city to broadcast the situation on the road. This application will help driver make his best route and ease the trafic block.
> The data is very simple, the most important  is main road's position, its name,  and the situation on the road which can be some levels for example 0 for free road and 5 for total blocked road. Some other layers can be include if the space permit. The mobile device will get the road map in once and then contact the host for the realtime road situation in some time gap.
> Now I must select a format for a space and bandwidth limited mobile device.  GML seems a good selection for  webgis. But it will waste a lot of bandwidth to transport tag. Is there a simple compact binary format suite my design.
> Hope some guru in this list will give me some suggestion.
> Thank!!

Fu Chen,

Given your very tight memory constraints, I would suggest rolling your own
format that is tuned to the precision and data you need and in a form that
is simpliest to parse and display on the client end.

Wow, 64K memory limit.  It's been a while since I considered such memory
constrained platforms.   Are you sure it wouldn't be better just sending a
pre-rendered graphic instead of raw gis data to the client?

Best regards,

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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
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