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
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