[Routing] Binary file format
Stefan de Konink
skinkie at xs4all.nl
Mon Dec 10 21:46:51 GMT 2007
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Guenther Meyer schreef:
> Am Montag 10 Dezember 2007 schrieb Adrian Stabiszewski:
>> Hi,
>>
>> I'm quite new to OSM, but I'm much exited about this project and the idea
>> having a vector map and use it for navigation.
>>
>> After looking a bit at travelling-salesman I think, it would be a good idea
>> to make some basic decisions on how to make a routing program.
>> The first thing which bothers me for some time now, is that on mobile
>> devices it will be quite impossible to parse several hundreds MB of XML
>> data in reasonable time. Also you won't have an SQL database running that
>> you can use for querying data. So both ways of accessing data are not
>> suitable for mobile devices.
>> But since we can rely on having a flash card with high speed access times
>> it would be a good idea to design a binary file format, which will allow us
>> to find the data we need for routing and displaying routes in a quick way.
>> I already have some basic file layout in my mind that I will post here in a
>> few days, but I also would like to hear, what you think about this
>> approach.
>>
> could sqlite be a suitable format?
NOOOO! :D
Please check what SQLite is suitable for :) Maybe it is interesting to
check out the Xara file format. It is completely binary and supports
next to graphical stuff also comments.
Stefan
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