That's actually potentially doable, since the database does keep a list of clients that are now disconnected - What's the structure of the marker array look like?
On Dec 16, 7:07 am, Andrew Leach <[email protected]> wrote: > On Dec 15, 6:20 pm, Ian Beyer <[email protected]> wrote: > > > > > If I simply poll at a setInterval, it will add new markers to the map, > > but not remove old ones when they are no longer connected. I can clear > > the map, but that makes it flicker, and if anyone has clicked on a > > particular marker, they get kicked off. > > This could get rather messy. If you were doing this manually, you > would go through your data file and for each entry you would find the > marker (or add one if it wasn't there) and correct its position; then > any left over at the end you remove. > > So you could just automate that. Read in the datafile and for each > entry, go through the array of markers and update the matching marker > (or add one if you don't find a matching marker). You also need to add > an attribute which indicates you have updated it -- perhaps a number > for each update, or the time you started the update. Then at the end > of your data, go through the markers one last time and remove any > which don't have the update attribute set to the latest value. > > Or: you might be able to construct an additional database query of > markers which *were* valid but no longer are, and simply remove those > in the same way that you update the others. That could be a new php > script, or a second dataset within the existing one. > > [I haven't checked your map; I've simply answered a philosophical > question.] -- You received this message because you are subscribed to the Google Groups "Google Maps API V2" 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.
