[OpenLayers-Users] since I'm a little dense...

[Adrian Popa]

Hello,

I had a similar task - of showing dynamic POIs and I chose to implement 
it like this:
- a Vector layer with KML data.
- the path to the KML file is actually a path to a serverside script 
wich generates KMLs.
- on searchbox submit a javascript creates new parameters for the 
serverside script
- I force a layer refresh

It works great - but it tends to crash Internet Explorer after a while - 
because IE keeps deleted markers in memory (silly behaviour). You can 
get around this by refreshing the whole page, but it's nasty.

Let me know if you need some code examples.
Regards,
Adrian

Nicholas Efremov-Kendall wrote:
> Hi all,
>
> I'm still trying to make a dynamic POI, or marker, or points layer, 
> whatever you want to call it, that changes the points in the map in 
> response to user's searches. I can't use mapserver or a pre-programmed 
> server-side option, so I'm forced to write my own gml or wkt. I'm 
> still not quite sure how to get this GML to OL and then replace it by 
> the next search.
>
> I think there are two options. One of which would be to send data to a 
> markers layer and have JS write the markers out. The other would be to 
> have php re-write the gml file on the server and theoretically, this 
> should create a new set of points each time the search is submitted. 
> Not sure what the best/easiest option would be with respect to coding 
> (either on the browser or server-side) or from a performance 
> perspective. Does anyone have any recommendations? I'm basically 
> copying a php/mysql kml tutorial and adapting it to GML (for largely 
> ideological reasons). I've just re-read the GML documentation, and it 
> states that the GML is meant to only be loaded once, so should I be 
> focusing on a dynamic marker layer or what?
>
> In effect, all I really want is a simple ajax function to load the 
> POI/markers that correspond to search criteria, such that every search 
> produces a unique (within a limited span of variation of course). The 
> maps centering won't really change, just the make up of the sites 
> displayed in the map. I can write the gml server side, and I can send 
> the request, but I'm not sure what to do with the call-back or how to 
> feed that info to OL.�
>
> Thank you in advance for any advice/help.
> (incidentally, I'd be willing to consider contracting someone to do this)
>
> best,
> Nick
> ------------------------------------------------------------------------
>
> _______________________________________________
> Users mailing list
> Users at openlayers.org
> http://openlayers.org/mailman/listinfo/users
>   


-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/openlayers-users/attachments/20090803/5e647131/attachment.html