[OSM-dev] Lite OSM backend

Jon Burgess jburgess at uklinux.net
Thu Sep 7 00:20:01 BST 2006


On Wed, 2006-09-06 at 23:03 +0100, OJW wrote:
> I'd better reveal this page then, in case anything is relevant to other people 
> developing binary OSM files:
> 
> http://almien.co.uk/OSM/Tools/Binary/

I reckon a good option for the lat/lon would be a 32bit fixed point
number. I think 2^32 data points over +-180 degrees gives a resolution
of about 1cm across the globe (40,000 km circumference / 4 billion).

	Jon






More information about the dev mailing list