Thanks, I tried this code
<?xml version="1.0" encoding="ISO-8859-1"?>
<StyledLayerDescriptor version="1.0.0"
xsi:schemaLocation="http://www.opengis.net/sld StyledLayerDescriptor.xsd"
xmlns="http://www.opengis.net/sld";
xmlns:ogc="http://www.opengis.net/ogc";
xmlns:xlink="http://www.w3.org/1999/xlink";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>
<NamedLayer>
<Name>Simple polygon</Name>
<UserStyle>
<Title>SLD Cook Book: Simple polygon</Title>
<FeatureTypeStyle>
<Rule>
<PolygonSymbolizer>
<Fill>
<CssParameter name="fill">
<ogc:PropertyName>color</ogc:PropertyName>
</CssParameter>
</Fill>
<Stroke>
<CssParameter name="stroke">#FFFFFF</CssParameter>
<CssParameter name="stroke-width">2</CssParameter>
</Stroke>
</PolygonSymbolizer>
</Rule>
</FeatureTypeStyle>
</UserStyle>
</NamedLayer>
</StyledLayerDescriptor>
"The requested Style can not be used with this layer. The style
specifies an attribute of color and the layer is: xxxx:xxxx"
What have I done wrong?
the content of color is
color
---------
#f4b5f
#a6be4c
#31abb5
#c98180
#b1558c
#db686c
#672474
#309cae
#ddb933
#1c9fea
#871c67
#4611fa
#743229
#5b1610
#47ea59
#8e341e
-Håvard
2011/8/29 David Winslow <[email protected]>:
> <CssParameter
> name="fill"><PropertyName>the_random_property</PropertyName></CssParameter>
>
> There's some other nice techniques in the SLD cookbook section of the
> manual, highly recommended reading for GeoServer stylists.
> http://docs.geoserver.org/stable/en/user/styling/index.html
>
> --
> David Winslow
> OpenGeo - http://opengeo.org/
>
> 2011/8/29 Håvard Wahl Kongsgård <[email protected]>
>>
>> >If you can modify your data, it might make sense to just add a column of
>> > random values to it and reference those from the SLD - that would allow you
>> > a bit more control if you find that the colors need tweaking (two similar
>> > colors in adjacent polygons, etc.)
>>
>> That would be a simple solution, in the SLD template how do I simply
>> set the color equal to database field value?
>>
>> -Håvard
>>
>> 2011/8/29 David Winslow <[email protected]>:
>> > If I wanted to achieve such a thing in Java, I would try something along
>> > the
>> > lines of:
>> >
>> > int hash = feature.getFeatureId().hashCode();
>> > String colorCode = String.format("#%06x", hash & 0xFFFFFF);
>> >
>> > I believe there is a format function exposed in GeoServer's SLD
>> > implementation - but I am not sure about a good SLD substitute for
>> > .hashCode. If you have to, it's not hard for a Java developer to add a
>> > filter function.
>> >
>> > If you can modify your data, it might make sense to just add a column of
>> > random values to it and reference those from the SLD - that would allow
>> > you
>> > a bit more control if you find that the colors need tweaking (two
>> > similar
>> > colors in adjacent polygons, etc.)
>> >
>> > --
>> > David Winslow
>> > OpenGeo - http://opengeo.org/
>> >
>> > 2011/8/28 Håvard Wahl Kongsgård <[email protected]>
>> >>
>> >> Hi, I have a layer with multiple bordering polygons which needs to be
>> >> visually separated.
>> >>
>> >> One possibility is to create a massive SLD template, defining random
>> >> colors for specific polygons.
>> >>
>> >> However, I noticed this post
>> >>
>> >>
>> >> http://osgeo-org.1803224.n2.nabble.com/Random-function-in-SLD-td6125434.html
>> >>
>> >> The problem with that approach is that polygons change colors when
>> >> zooming, and when map tiles are enabled, polygons crossing different
>> >> tiles have multiple colors. With SLD templates is there another way to
>> >> do this?
>> >>
>> >>
>> >> <?xml version="1.0" encoding="ISO-8859-1"?>
>> >> <StyledLayerDescriptor version="1.0.0"
>> >> xsi:schemaLocation="http://www.opengis.net/sld
>> >> StyledLayerDescriptor.xsd"
>> >> xmlns="http://www.opengis.net/sld";
>> >> xmlns:ogc="http://www.opengis.net/ogc";
>> >> xmlns:xlink="http://www.w3.org/1999/xlink";
>> >> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>
>> >> <!-- a Named Layer is the basic building block of an SLD document -->
>> >> <NamedLayer>
>> >> <Name>default_polygon</Name>
>> >> <UserStyle>
>> >> <!-- Styles can have names, titles and abstracts -->
>> >> <Title>Default Polygon</Title>
>> >> <Abstract>A sample style that draws a polygon</Abstract>
>> >> <!-- FeatureTypeStyles describe how to render different features
>> >> -->
>> >> <!-- A FeatureTypeStyle for rendering polygons -->
>> >> <FeatureTypeStyle>
>> >> <Rule>
>> >> <Name>rule1</Name>
>> >> <PolygonSymbolizer>
>> >> <Fill>
>> >> <CssParameter name="fill">
>> >> <ogc:Function name="numberFormat">
>> >> <ogc:Literal>'#'000000</ogc:Literal>
>> >> <ogc:Mul>
>> >> <ogc:Function name="random"></ogc:Function>
>> >> <ogc:Literal>1000000</ogc:Literal>
>> >> </ogc:Mul>
>> >> </ogc:Function>
>> >> </CssParameter>
>> >> <CssParameter name="fill-opacity">0.7</CssParameter>
>> >> </Fill>
>> >> <Stroke>
>> >> <CssParameter name="stroke">#000000</CssParameter>
>> >> <CssParameter name="stroke-width">1</CssParameter>
>> >> </Stroke>
>> >> </PolygonSymbolizer>
>> >> </Rule>
>> >> </FeatureTypeStyle>
>> >> </UserStyle>
>> >> </NamedLayer>
>> >> </StyledLayerDescriptor>
>> >>
>> >> --
>> >> Håvard Wahl Kongsgård
>> >>
>> >>
>> >>
>> >> ------------------------------------------------------------------------------
>> >> EMC VNX: the world's simplest storage, starting under $10K
>> >> The only unified storage solution that offers unified management
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>> >
>> >
>>
>>
>> ------------------------------------------------------------------------------
>> EMC VNX: the world's simplest storage, starting under $10K
>> The only unified storage solution that offers unified management
>> Up to 160% more powerful than alternatives and 25% more efficient.
>> Guaranteed. http://p.sf.net/sfu/emc-vnx-dev2dev
>> _______________________________________________
>> Geoserver-users mailing list
>> [email protected]
>> https://lists.sourceforge.net/lists/listinfo/geoserver-users
>
>
------------------------------------------------------------------------------
EMC VNX: the world's simplest storage, starting under $10K
The only unified storage solution that offers unified management
Up to 160% more powerful than alternatives and 25% more efficient.
Guaranteed. http://p.sf.net/sfu/emc-vnx-dev2dev
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