The WMS layes support a get legend graphics operation so you should be able to
make a legend graphic from that.
There is an example request on the user guide wiki.
I had a bit of trouble with it myself as many WMS servers ignore your requested
width and height and return a small image that is part of a larger icon +
title. So in uDig I went to some trouble to extract a 16x16 icon if in fact the
WMS ignored me and returned something larger then the 16x16 icon I asked for.
If you are interested the code is here:
-
http://svn.refractions.net/udig/udig/trunk/plugins/net.refractions.udig.catalog.wms/src/net/refractions/udig/catalog/internal/wms/WMSGeoResourceImpl.java
For vector layers you need to roll up your sleeves and generate something - In
uDig I used code to look at the SLD for the vector layers and generate an icon.
-
http://svn.refractions.net/udig/udig/trunk/plugins/net.refractions.udig.ui/src/net/refractions/udig/ui/graphics/Glyph.java
-
http://svn.refractions.net/udig/udig/trunk/plugins/net.refractions.udig.project.ui/src/net/refractions/udig/project/ui/internal/LayerGeneratedGlyphDecorator.java
If you could tame these two uDig specific examples into something for java
swing we could add them to the gt-swing module (and it would be a great help).
I think the geoserver project also started drawing icons by hand based on SLD?
Jody
On 01/07/2010, at 7:51 AM, Parker, Peter R (DNR) wrote:
> Hello,
> I currently have a MapContent that contains some vector data layers and some
> WMS source layers. I want to create a Legend image based on the styles
> associated with the features in the vector layers and combine that with
> images created from the WMS GetLegendGraphic request for the WMS layers. Any
> suggestions?
>
> Thank you,
> Peter
>
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