[Chameleon] Architectural Advice
anthony farrant
anthony.k.farrant at gmail.com
Fri Apr 6 10:12:18 EDT 2007
Thanks. That's exactly what I want to do.
There's a mapobject function that saves the map (save()) but how to tell it
to load
it back up again.
Some have done it succesfully, for example here:
http://seamap.env.duke.edu/prod/mapservice/onlinemap/oms_main_v2.phtml
--> Chameleon loads the layer and keeps it and reuses it, the layer
<i>sticks</i>.
The difficulty seems to be: How to initialize the layer only once and keep
it loaded.
Anthony
On 4/6/07, Abe Gillespie <abe.gillespie at gmail.com> wrote:
>
> It's been a while since I've done this but you need to save the
> updated map back into Chameleon. Otherwise Chameleon drops all the
> runtime added settings and layers.
>
> I think it's somewhere in a Chameleon class that wraps the map.
> Sorry, I'm away from my Chameleon dev environment at the moment.
>
> -Abe
>
> On 4/6/07, anthony farrant <anthony.k.farrant at gmail.com> wrote:
> > Yeah. Nice example. That's more or less what I'm trying to achieve.
> >
> > I'm playing with dynamic layers for the moment. Inserting code between
> > the initialize and execute.
> >
> > $oApp = new Mapper();
> > $oApp->registerSkin( 'skins/sample' );
> > $oApp->CWCInitialize( $szTemplate, $szMapFile );
> > if ($action_type == "1") {
> > $oApp->addLayer("New",$points,'FF0000','point',4);
> > }
> > $oApp->CWCExecute();
> >
> > where $action_type is a GET variable and $points a coordinate array.
> >
> > The problem with this solution is that at each refresh of the page
> (zoom,
> > update, etc)
> > it creates a new layer. The layer dissapears too when you refresh the
> page
> > without
> > the action_type in the URL.
> >
> > What I'm seeking to do is create session layers. Is there anyway to do
> this?
> >
> > Thanks for your advice guys,
> >
> > Anthony
> >
> >
> >
> >
> > On 4/5/07, Julien-Samuel Lacroix <jlacroix at mapgears.com> wrote:
> > > Hi,
> > > I the Chameleon samples you have a lot of examples using the existing
> > > widgets. What you are trying to do is probably what the WMSBrowser
> > > widget is doing in the OGC sample. Is it possible?
> > > Julien
> > >
> > > anthony farrant wrote:
> > > > Thanks. I'll try that out, Bart.
> > > >
> > > > In the meanwhile I'm trying to implement dynamic layers in
> Chameleon.
> > > > Do you know where I can start to find info about this? The doc on
> the
> > WEB
> > > > site doesn't seem to contain a lot.
> > > > The layer would be created accroding to user input through a popup
> form.
> > > > Possible?
> > > > I'm pretty much familiar with PHP/Mapscript
> > > > but not yet with the dynamics of Chameleon. Any links to tutorials
> are
> > > > welcome.
> > > >
> > > > Regards,
> > > >
> > > > Anthony
> > > >
> > > >
> > > >
> > > > On 4/4/07, *Bart van den Eijnden (OSGIS)* <bartvde at osgis.nl
> > > > <mailto: bartvde at osgis.nl>> wrote:
> > > >
> > > > If you only use WMS client layers in Chameleon, this should be
> > > > possible (if
> > > > I understand your problem correctly).
> > > >
> > > > Best regards,
> > > > Bart
> > > >
> > > > --
> > > > Bart van den Eijnden
> > > > OSGIS, Open Source GIS
> > > > http://www.osgis.nl
> > > >
> > > >
> > > > --------- Oorspronkelijk bericht --------
> > > > Van: anthony farrant < anthony.k.farrant at gmail.com
> > > > <mailto:anthony.k.farrant at gmail.com>>
> > > > Naar: chameleon at lists.maptools.org
> > > > <mailto:chameleon at lists.maptools.org> <
> chameleon at lists.maptools.org
> > > > <mailto:chameleon at lists.maptools.org>>
> > > > Onderwerp: [Chameleon] Architectural Advice
> > > > Datum: 04/04/07 06:46
> > > >
> > > > > Hello,I'd like to use chameleon to build our GIS web app
> but
> > > > have to
> > > > cope with a major difficulty:Our website is physically and
> logically
> > > > separated from our GIS server runningMapserver and Chameleon
> > (different
> > > > cities & networks). This implies that every change induced
> > > > > by the user has to be tranferred to the GIS server which
> sends
> > > > back the
> > > > answer (the map).Until now I have used a custom PHP/Mapscript
> > > > application
> > > > but I would like to benefit from theChameleon framework to build
> > > > nicer and
> > > > more functional applications.
> > > > > For the moment all the command logic is situated on the web
> > > > server which
> > > > handles requestsand then sends appropriate data to the GIS
> server to
> > > > build
> > > > the map. When the map returnsthe web server updates it's
> > > > internal info
> > > > (extent) and presents the map. All the databases
> > > > > are situated on the webserver so the GIS is only used for map
> > > > generation.
> > > > I understand that this would not be possible with Chameleon
> since it
> > > > handles
> > > > both commandlogic and map generation. I was wondering if any of
> you
> > > > has had
> > > > to deal with such a situation before and if you
> > > > > have found a lasting solution for it.CHeers,Anthony
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > _______________________________________________
> > > > > Chameleon mailing list
> > > > > Chameleon at lists.maptools.org
> > <mailto:Chameleon at lists.maptools.org>
> > > > >
> > http://lists.maptools.org/mailman/listinfo/chameleon
> > > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > ------------------------------------------------------------------------
> > > >
> > > > _______________________________________________
> > > > Chameleon mailing list
> > > > Chameleon at lists.maptools.org
> > > > http://lists.maptools.org/mailman/listinfo/chameleon
> > >
> > > --
> > > Julien-Samuel Lacroix
> > > Mapgears
> > > http://www.mapgears.com/
> > >
> >
> >
> > _______________________________________________
> > Chameleon mailing list
> > Chameleon at lists.maptools.org
> > http://lists.maptools.org/mailman/listinfo/chameleon
> >
> >
>
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