Thx Bjorn. You are absolutely correct regarding the data requirements for creating tiles for a large geographic area.
"Google Maps Applications with PHP and AJAX", on page 245, provides a table for creating world wide tiles at different zoom levels. At level 17 it's 163.359TB!!! Mike On Feb 2, 2:38 pm, Björn Brala <[email protected]> wrote: > Just search about image manipulation. Combine this with a class that > calculates tile coordinates and your set. One thing, to make sure you dont > use up to much server resources create some kind of caching. Save every tile > you generate to the server and regenerate them when they change. This is > rather dependand on how much the data changes tho. > > Be weary tho, i've created tiles for a historical map for my home city, > leiden (about 100k residents, not that big), and that was about 110 MB of > data. If you cache everything for half the US for those zoom levels, you > might be looking at a LOT of data. > > 2009/2/2 MikeD - Austin, TX <[email protected]> > > > > > > > Yes. I was referring to the server side code. > > > On Feb 2, 4:53 am, marcelo <[email protected]> wrote: > > > What do you mean by "GTileLayerOverlay in Java"? > > > GTileLayerOverlay is a javascript object that only exists in the > > > client. > > > > Creating the tiles can be done with any language you want on the > > > server side, but it has no relationship to the javascript object that > > > loads those tiles on the client. > > > > Example implementations, (on the client), of GTileLayer and > > > GTileLayerOverlay: > >http://maps.forum.nu/gm_main.html?lat=39.436193&lon=-103.535156&z=4&m... > > > > -- > > > Marcelo -http://maps.forum.nu > > > -- > > > > On Feb 2, 10:50 am, "MikeD - Austin, TX" <[email protected]> wrote: > > > > > I have been searching for a good reference implementation for the > > > > GTileLayerOverlay in Java. Can anyone point me to a good example? > > > > > There is a fairly good PHP example in, "Google Maps Applications with > > > > PHP and AJAX"; however, the server side implementation does not > > > > translate well into Java. > > > > > Also, does anyone have any first hand experience in the amount of > > > > server resources required to provide custom tile overlays? We need to > > > > cover about 50% of the U.S. from zoom level 6 to zoom level 14. > > > > Beyond zoom level 14 we'll just display the points. > > > > > Thx. > > > > > Mike > > -- > Bjorn Brala > ---------------- > GeoStart.nl- Google maps - Swis Webdesign --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Maps API" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/Google-Maps-API?hl=en -~----------~----~----~----~------~----~------~--~---
