FW: [Openstreetmap] Recent improvements to the editing applet

[SteveC]

* @ 30/12/05 06:49:22 PM lars at aronsson.se wrote:
> Etienne Cherdlu wrote:
> 
> > This afternoon the server was almost fast enough to be usable.  This
> > is how long it took to do anything.  Starting from the viewer in view
> > mode and clicking the edit button took 82 seconds before all the tiles
> > had been drawn.
> 
> Currently the tiles (both in viewing and editing) are 256 x 128 
> pixels.  How would performance be different if the tiles were, 
> say, 512 x 256 pixels instead?  That would cause fewer tiles and 
> fewer calls to the server, but every tile would take a little 
> longer to process.

Matt came up with a mathematica notebook which spat out 256x256 as the
best size, but I have no idea how it worked / if it was correct.

I would imagine google and MSFT might have thought about this a little,
what are their tile sizes / format / colour depth / compression ratios?

have fun,

SteveC steve at asklater.com http://www.asklater.com/steve/