You control the scale at which things are displayed using Rules with
MinScaleDenominator and MaxScaleDenominator:
<StyledLayerDescriptor version="1.0.0"
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"
xsi:schemaLocation="http://www.opengis.net/sld
StyledLayerDescriptor.xsd">
<NamedLayer>
<Name>YOUR_LAYER_NAME</Name>
<UserStyle>
<FeatureTypeStyle>
<Rule>
<MinScaleDenominator>25000</MinScaleDenominator>
<MaxScaleDenominator>1000000</MaxScaleDenominator>
<TextSymbolizer>
<Geometry>
<ogc:PropertyName>YOUR_GEOMETRY_NAME</ogc:PropertyName>
</Geometry>
<Label>
<ogc:PropertyName>city_name</ogc:PropertyName>
</Label>
<Font>
<CssParameter
name="font-family">Arial</CssParameter>
<CssParameter
name="font-style">Normal</CssParameter>
<CssParameter
name="font-weight">Normal</CssParameter>
<CssParameter
name="font-size">12</CssParameter>
</Font>
<Halo>
<Radius>1</Radius>
<Fill>
<CssParameter name="fill">#00FF00</CssParameter>
<CssParameter name="fill-opacity">0.3</CssParameter>
</Fill>
</Halo>
<Fill>
<CssParameter
name="fill">#FF0000</CssParameter>
<CssParameter
name="fill-opacity">1.0</CssParameter>
</Fill>
</TextSymbolizer>
</Rule>
</FeatureTypeStyle>
</UserStyle>
</NamedLayer>
</StyledLayerDescriptor>
The SLD Spec has it all: http://www.opengeospatial.org/docs/02-070.pdf
Miles
Miles Jordan
Applications Developer
The Australian Antarctic Data Centre
-----Original Message-----
From: geoserver-users-admin@lists.sourceforge.net
[mailto:geoserver-users-admin@lists.sourceforge.net] On Behalf Of
Akkineni Vijay
Sent: Wednesday, 22 February 2006 5:00 PM
To: geoserver-users@lists.sourceforge.net
Subject: [Geoserver-users] making a property visible
Hi Guys,
I have a scenario in my project , when i make the
propert city_name print on the map . the map gets too crowded . so i
want to make the city_name visible only after zooming to certain
extent . how can we do this . do i have to make some changes in the SLD
Regards,
Vijay Akkineni.
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