[Tilesathome] Projection questions

[spaetz]

On Wed, Aug 22, 2007 at 12:53:54PM +0100, Robert (Jamie) Munro wrote:

> The need is that lowzoom tiles generated directly, rather than by 
> stiching higher zoom tiles together, don't match the high-zoom tiles 
> when you zoom in. There will always be a shift in latitude (except at 
> the equator and 2 points to the north and south of the equator depending 
> on what scale you use).

13:43 < kleptog> doubling the scale quadriples the error
13:44 < kleptog> so 1.5m at zoom-12 -> 24m at zoom-10 

380m maximum error at z8 is something which will not really be visible on z6 tiles. And that is the maximum error.