Create a layer with an SLD with multiple rules (for different zoom levels, or different filters, say), with a <Title> and <Name> for each rule. now do a GetLegendGraphic request for that layer. you get a sexy-ass legend with an icon and title for each Rule. however, if you want to pick only one of those Rule's to represent the layer in your legend, when you add &Rule=RULE, it shows the icon for that rule but the Title goes away. eg:
http://64.119.128.70/geoserver/wms?VERSION=1.1.0&REQUEST=GetLegendGraphic&LAYER=massgis:GISDATA.COUNTIES_POLY&STYLE=GISDATA.COUNTIES_POLY::Default&WIDTH=16&HEIGHT=16&FORMAT=image/png
vs
http://64.119.128.70/geoserver/wms?VERSION=1.1.0&REQUEST=GetLegendGraphic&LAYER=massgis:GISDATA.COUNTIES_POLY&STYLE=GISDATA.COUNTIES_POLY::Default&WIDTH=16&HEIGHT=16&FORMAT=image/png&Rule=Barnstable
(note: I'm linking to the Mass GIS server, but I see the same behavior of my installation of GeoServer 1.5.1, which they are also using).
thanks,
Mike
Hi Mike,
We recently redid our GetLegendGraphic code and basically mimicked what
mapserver does. Described in this thread with an example:
http://mapserver.gis.umn.edu/data2/wilma/mapserver-users/0405/msg00194.html
If you append RULE=Unclassified for example you don't get the title.
-Justin
Michael Frumin wrote:
Create a layer with an SLD with multiple rules (for different zoom
levels, or different filters, say), with a <Title> and <Name> for each
rule. now do a GetLegendGraphic request for that layer. you get a
sexy-ass legend with an icon and title for each Rule. however, if you
want to pick only one of those Rule's to represent the layer in your
legend, when you add &Rule=RULE, it shows the icon for that rule but the
Title goes away. eg:
http://64.119.128.70/geoserver/wms?VERSION=1.1.0&REQUEST=GetLegendGraphic&LAYER=massgis:GISDATA.COUNTIES_POLY&STYLE=GISDATA.COUNTIES_POLY::Default&WIDTH=16&HEIGHT=16&FORMAT=image/png
<http://64.119.128.70/geoserver/wms?VERSION=1.1.0&REQUEST=GetLegendGraphic&LAYER=massgis:GISDATA.COUNTIES_POLY&STYLE=GISDATA.COUNTIES_POLY::Default&WIDTH=16&HEIGHT=16&FORMAT=image/png>
vs
http://64.119.128.70/geoserver/wms?VERSION=1.1.0&REQUEST=GetLegendGraphic&LAYER=massgis:GISDATA.COUNTIES_POLY&STYLE=GISDATA.COUNTIES_POLY::Default&WIDTH=16&HEIGHT=16&FORMAT=image/png&Rule=Barnstable
<http://64.119.128.70/geoserver/wms?VERSION=1.1.0&REQUEST=GetLegendGraphic&LAYER=massgis:GISDATA.COUNTIES_POLY&STYLE=GISDATA.COUNTIES_POLY::Default&WIDTH=16&HEIGHT=16&FORMAT=image/png&Rule=Barnstable>
(note: I'm linking to the Mass GIS server, but I see the same behavior
of my installation of GeoServer 1.5.1, which they are also using).
thanks,
Mike
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Justin Deoliveira
The Open Planning Project
jdeolive@anonymised.com