[ka-Map-users] Controlling the number of points using addObjectGeo

[Stephen Woodbridge]

This is an excellent question as we have been doing something similar 
with router overlays. We currently overlay an image just the size of the 
viewport, but it would make sense to ask for a larger image say the size 
of the preloaded tile extents and then only update that when additional 
tiles are requested because the preloaded tile extent needs to change 
because of panning or zooming. Could this be made an ka-map event that 
can be easily hooked?

-Steve

Base Bloc wrote:
> Dear all,
> 
>  
> 
> First off I would like to say that ka-map 0.2 is a fantastic piece of 
> kit and thanks for all the work that people have put in to this.
> 
>  
> 
> I am currently building an application using 0.2 and I am using the 
> addObjectGeo function to add markers along with mouseover events (pop-up 
> windows) to the map. All is working as it should and is looking good. My 
> concern now is the number of markers; the application is covering most 
> of Southeast Asia and the number of markers is going to be high. I am 
> looking to use Ajax to connect to a MySQL database to retrieve the point 
> data relevant to the area of the map being viewed, as if all of the 
> points were to be retrieved in one go it would result in a serious 
> performance hit for the user.
> 
>  
> 
> I’m no ka-map expert, but I was wondering how ka-map does this 
> efficiently with the tiles; as in it gets x number of tiles closest to 
> the area being viewed then moves outwards, is there anyway to use the 
> variable(s) that are being sent to the server to request the tiles to 
> also query the database and return the point data in an equally 
> efficient manor?
> 
>  
> 
> Thanks in advance for your thoughts.
> 
>  
> 
> Chris
> 
>  
> 
>  
> 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> Christopher Brown
> 
> Head of Internet Development
> 
> Base Bloc Cambodia
> 
> #33, 123, Phnom Penh, Cambodia.
> 
> P.O. Box 2086
> 
> www.basebloc.com
> 
> Tel (+885) 12 315 302
> 
>  
> 
> 
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