[Routing] OpenGPScout

Marcus Wolschon marcus at wolschon.biz
Mon Nov 19 07:23:42 GMT 2007


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Nic Roets schrieb:
>> How do you number your tiles that 1 byte is enough to reference a tile?
> 
> Most modern CPUs are quite slow at accessing variables smaller than
> their word size (32 bits or 4 bytes). So I'd suggest to only resort to
> 1 byte variables when it becomes clear an average sized city will not
> fit into RAM.

Hello Nic,

so you limit your map-size to single cities?
I take it you want to do navigation for pedestrians then?

I thought about navigating for cars between cities as
even the smallest cell-phones can have a 2GB SD-card
with a (commercial, compressed) map of europe.

Marcus
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