Here is a map that does that http://wales.portal.geographs.org/map.php?view=thumbs
Ok, that particular map is not using millions of markers, but the same technique works for bigger datasets. (I just dont have any big datasets using v3 of the maps api) The biggest issue is deciding which features to show as the 'sample'. Picking random works reasonably well. But there are more elaborate ways of doing it. You could perhaps pick the top rated (if your dataset has that) On Mon, Mar 5, 2012 at 1:58 PM, Henri Cammiade <henri.cammi...@gmail.com> wrote: > Yes. Obviously it is pointless displaying markers in areas half way around > the world to the view port. The DB has millions of locations - what is the > best way to build the gmap for high performance of loading initial markers > and for loading additional markers on pan/zoom. > > Thanks > > On Mar 5, 2012 3:16 AM, "Rossko" <ros...@culzean.clara.co.uk> wrote: >> >> > I'd like to know what are the best strategies and practises to use >> > when building a google map that has millions of markers. >> >> Go back a step and re-examine your needs. A viewer isn't goimg to get >> much value out of a map with millions of markers on it, so you could >> perhaps think about what you want to actually show at any given time >> (perhaps from an available pool of millions of markers) >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Google Maps JavaScript API v3" group. >> To post to this group, send email to >> google-maps-js-api-v3@googlegroups.com. >> To unsubscribe from this group, send email to >> google-maps-js-api-v3+unsubscr...@googlegroups.com. >> For more options, visit this group at >> http://groups.google.com/group/google-maps-js-api-v3?hl=en. >> > -- > You received this message because you are subscribed to the Google Groups > "Google Maps JavaScript API v3" group. > To post to this group, send email to google-maps-js-api-v3@googlegroups.com. > To unsubscribe from this group, send email to > google-maps-js-api-v3+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/google-maps-js-api-v3?hl=en. -- You received this message because you are subscribed to the Google Groups "Google Maps JavaScript API v3" group. To post to this group, send email to google-maps-js-api-v3@googlegroups.com. To unsubscribe from this group, send email to google-maps-js-api-v3+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-maps-js-api-v3?hl=en.
