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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