[mapserver-users] Publishing a dynamically created (and transient) map

[Bob Basques]

Christian,

 From what you describe (and I'm not sure I understand it 100%), I think 
you are simply talking about a Listener service for your surveillance 
process, similar to a GPS listener.

If that's the case, then I would simply set up a database table in 
POSTGIS and feed it records (CML or WKT, or) at some interval and use a 
Mapserver to POSTGIS rendering process to visualize things.  Let the 
Database client decide how often it wants to see an update by querying 
the database at it's leisure.  I've set up similar configurations for 
GPS devices.

Or did I get the wrong intent?

bobb



On 3/12/2010 11:19 AM, Christian Jauvin wrote:
> Hi,
>
> In a surveillance application I am creating (DraconesPH), I build new
> maps by dynamically adding features on static layers (for instance,
> convex hull polygons computed with PostGIS, illustrating the results
> of a cluster detection algorithm).
>
> Someone asked me recently if there was a way to publish those dynamic
> maps as a WMS service: at any point in the application flow, a user
> wanting to publish the current map would push a button, which would
> save it (perhaps as GML?) and make it accessible from an external
> application (along with some useful metadata), despite the fact that
> the current map, being transient, may have changed meanwhile.
>
> At first I thought that this was going to be easy, and that I would
> simply have to study and understand the WMS/WFS model. In particular,
> this page seems highly relevant to what I want to do:
>
> http://mapserver.org/ogc/mapscript.html
>
> But then I am not sure if this model exactly applies to what I have in
> mind, and so I would appreciate any possible help or guidance.
>
> Best,
>
> Christian
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