[josm-dev] pecision of mouseclick in josm - may be notjsom-specific

Frederik Ramm frederik at remote.org
Tue Feb 1 23:57:53 GMT 2011


Hi,

Sebastian Klein wrote:
> Good to know... I think we could get this value down to 0.642cm if use 
> the full 64 bit and don't skip the range from 180*10^7 to 2^31 
> (longitude) and from 85.1*10^7 to 2^31 (latitude).

But why stop there and allow ridiculous resolution at the poles? Given 
that the earth has a surface of 510,072,000 square kilometres, if you 
divide that surface in 2^64 almost-round shapes, then each of those only 
has an area of 0.2765 square centimetres, allowing you to address each 
place on the surface with 0.52cm precision!

Bye
Frederik

-- 
Frederik Ramm  ##  eMail frederik at remote.org  ##  N49°00'09" E008°23'33"



More information about the josm-dev mailing list