En/na Andre-John Mas ha escrit: > On 20-Nov-2009, at 10:52, Kris Douglas wrote: > > >> 2009/11/20 Xan <[email protected]>: >> >> >>> @James: if google did it, it's useful. The enterprises don't waste >>> time.... They want to make money. So that information is useful in some way. >>> >>> >> As a matter of fact, Google did do it for fun. They had an existing >> system for Google maps, and decided to use free time to throw some >> basic map data on to the engine. With the google engine, I could do it >> in 20mins with the data. >> > > Having looked at how things are done, the main challenge would be mostly > with keeping the bandwidth down, than anything else. The server is > essentially serving up tiles of varying sizes based on the zoom and the > front-end is essentially deciding which tiles to fetch based on what is > currently displayed and in which direction the user is moving the map. > > I was able to split one of the higher resolution maps from NASA using > ImageMagick, which gives the tiles. I then made a basic UI, which I > never got round to finishing that would fetch the image based on its > name. For example: > > /..../<zoom-level>/image_<x>_<y>.jpg > > The code would know about how many tiles high and wide the map was and > also the size of the tile for the given zoom. > > I haven't looked at how OSM draws its maps, but there is a good chance > it may be doing the same thing. > > André-John > > Did you do it really? It's exciting thing.
Anyone could provide the missing information to André-John for completing the job? André, if I could, I want to help when you have preliminarly version. I'm a newbee but, for example I could put the names in craters of moon, translate names (in spanish and catalan), etc. Xan. _______________________________________________ newbies mailing list [email protected] http://lists.openstreetmap.org/listinfo/newbies
