[Users] How to create legend panel using OpenLayers.Layer.MapServer layer...

[stela anders]

Thanks again...
I have 3 layers, each one has several sublayers.... :
OpenLayers.Layer.WMS("Layer1", ...
OpenLayers.Layer.WMS("Layer2",
OpenLayers.Layer.WMS("Layer3",
But my legend only prints one Label ("Layer1") .... None imagens at all...
And just for the first layer...

 var legendPanel = new GeoExt.LegendPanel({
        defaults: {
            style: 'padding:5px'
        },
        title: 'Legend',
        bodyStyle: 'padding:5px',
        width: 350,
        autoScroll: true
    });


Is there anything else to implement ? Maybe in mapfile?

Stella



2010/1/6 Andreas Hocevar <ahocevar at opengeo.org>

> On 2010-01-06 18:00, stela anders wrote:
> > Yeah! Thats it Andreas!
> >
> > That LegendPanel works with sublayers? I´m a little bit confused right
> > now!
>
> The LegendPanel currently supports one image per layer. GeoServer's
> GetLegendGraphic e.g. returns images with symbols and text for all rules
> of the SLD that was used to render the layer. I think the same is true
> for MapServer, but maybe a MapServer user can give more detail about
> what its GetLegendGraphic returns.
>
> Regards,
> Andreas.
>
>
> >
> > Thanks !
> >
> >
> >
> > 2010/1/6 Andreas Hocevar <ahocevar at opengeo.org
> > <mailto:ahocevar at opengeo.org>>
> >
> >     Hi,
> >
> >     make sure that your Ext JS build contains Ext.form.Label, or use a
> >     full
> >     build. The build that most of the GeoExt exmaples use
> >     (http://extjs.cachefly.net/builds/ext-cdn-771.js) does not contain
> it.
> >     Look e.g. at
> >     http://dev.geoext.org/trunk/geoext/examples/legendpanel.html, it
> >     uses a
> >     full build.
> >
> >     Regards,
> >     Andreas.
> >
> >     On 2010-01-06 16:24, stela anders wrote:
> >     > Thanks Andreas !!!!
> >     > I changed to WMS with success...
> >     > But now I got that error when trying to generate the legend :
> >     >
> >     > Error: Ext.form.Label is not a constructor
> >     > Arquivo-fonte:
> >     >
> >
> http://localhost/Openlayer/Arquivos/geoextx/lib/GeoExt/widgets/LegendPanel.js
> >     > Linha: 293
> >     >
> >     > Am I suppossed to change anything?
> >     >
> >     > Thanks
> >     >
> >     > Stella
> >     >
> >     > 2010/1/5 Andreas Hocevar <ahocevar at opengeo.org
> >     <mailto:ahocevar at opengeo.org>
> >     > <mailto:ahocevar at opengeo.org <mailto:ahocevar at opengeo.org>>>
> >     >
> >     >     Hi,
> >     >
> >     >     On 2010-01-04 19:36, stela anders wrote:
> >     >     > Is it possible?
> >     >
> >     >     You have at least two choices:
> >     >
> >     >     (1) Use Layer.WMS instead of Layer.MapServer. With minor
> >     modifications
> >     >     to your mapfile, it is easy to use MapServer as WMS (see
> >     >     http://mapserver.org/ogc/wms_server.html). I think this is
> >     the best
> >     >     option, because it will build the legend automatically from
> >     >     GetLegendGraphic requests.
> >     >
> >     >     (2) Use a LayerStore with a legendURL field. For each layer,
> you
> >     >     have to
> >     >     provide a URL that points to a legend image. This option may
> >     only work
> >     >     with the current trunk version of GeoExt, not with v0.6.
> >     >
> >     >     Regards,
> >     >     Andreas.
> >     >
> >     >     >
> >     >     > I tried to create that :
> >     >     >   var legendPanel = new GeoExt.LegendPanel({
> >     >     >             title: 'Legend',
> >     >     >             dynamic: true
> >     >     >      });
> >     >     >
> >     >     > And added to Viewport, but nothing is created...
> >     >     >
> >     >     > Help me please!
> >     >     >
> >     >     >
> >     >     >
> >     >     > _______________________________________________
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> >     >     >
> >     >
> >     >
> >     >     --
> >     >     Andreas Hocevar
> >     >     OpenGeo - http://opengeo.org/
> >     >     Expert service straight from the developers.
> >     >
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> >     >
> >     >
> >     >
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> >
> >
> >     --
> >     Andreas Hocevar
> >     OpenGeo - http://opengeo.org/
> >     Expert service straight from the developers.
> >
> >
>
>
> --
> Andreas Hocevar
> OpenGeo - http://opengeo.org/
> Expert service straight from the developers.
>
>
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