[SLD] GetLegendGraphic "problem"

[Jacolin Yves]

Le Monday 08 October 2007 16:00:13 Till Adams, vous avez écrit :
> Jacolin Yves schrieb:
> >Hi,
> >
> >I come back with some new problem. I have always my mapfile with my 6
> > groups of layers. I am trying to get the legend of my layer(s) with the
> >GetLegendGraphic request. I succeed to get it for a simple layer but not
> > for layers' group. However, I can use this layer group using WMS (ie I
> > get the correct map using LAYERS=layerGroupName), not for the
> > GetLegendGraphic.
> >
> >Anyone have an idea to looking for why it is not working? Is it a
> > MapServer limit?
> >
> >Regards,
> >
> >Y.
>
> Der Y.,
>
> yes! This is because the WMS specification does not know groups - you
> would get the same problem, if you
> would try to do a featureinfo request on a grouped layer.
>
> The map-request works, because mapserver handles a group like a single
> layer and delivers one image
> for all requested layers, for a legend graphic the request targets a
> single layer ("layer=.." instead of
> "layers=.." for a map-request) and mapserver delivers one legend for a
> single layer. That's your problem.
>
> We handled this in mapbender e.g. by letting the client know the
> "childs" of the grouped layer and then
> request the single layers by their name and not their groupname. This
> also could be your workaround.
>
> Regards, Till
Hi,

Thanks Till. I was afraid of this. I am going to try to manage my layers group 
in the client side. :)

Y.
-- 
Yves Jacolin
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