I have done a lot of this sort of thing. Simply put, to convert long,lat into x,y you need to know the projection of you image. Once you know that, it is a simple matter of writing a function to convert your long,lat based on the projection algorithm.
See: http://www.progonos.com/furuti/MapProj/Normal/CartHow/cartHow.html which also has links to some popular projection algorithms. --- In flexcoders@yahoogroups.com, "Christophe Jolif" <[EMAIL PROTECTED]> wrote: > > Hi Rich, > > Not sure it fits your needs as it would require you to change your map but if you are ok with that ILOG Elixir dashboard maps are allowing you to convert lat/long to x,y position on the map. > > Hope this helps, > > Christophe > -- > http://elixir.ilog.com > > ________________________________ > > De: flexcoders@yahoogroups.com de la part de Rich Rodecker > Date: lun. 6/16/2008 10:05 > À: Flash Coders List; flexcoders@yahoogroups.com > Objet : [flexcoders] custom map image geocoding service? > > > I'm building a flash app which requires some mapping functionality. It's relatively simple, so I'm not sure that it needs all the bells and whistles that come with using google's or yahoo's map services. Basically we have a static U.S./Canada map image (no pan or zoom) that has some interactive markers overlaid on it...pretty much a heatmap I guess. We're already set up with receiving the latitude and longitude coordinates, now i just need to translate that into x,y positions on the map. I know there are services out there that handle this, but I've been searching for a while and most of the results reference back to google or yahoo maps, so I'm thinking I'm not suing the right search terms. Does anyone know where I can get this done...or any other tips/advice that might help? > > Thanks, > > Rich >
