alyssa wright ha scritto:
> Hi all,
>
> I am labelling a point and find myself with extra points without labels.
> See the red boxes here:
>
> http://skitch.com/alyssawright/d1gse/openlayers-map-preview
>
> It gets better when I remove my vendor options, but it's never perfect.
> I'm wondering what I might do to mitigate this?
When you want to make sure a point and a label can only appear togheter,
or not appear at all, you can put the Graphic inside the text symbolizer
(yes, this is a non well documented GeoServer specific extension):
<Rule>
<Name>city1 12.5M_3M</Name>
<Title>city1 12.5M_3M</Title>
<ogc:Filter>
<ogc:Or>
<ogc:PropertyIsEqualTo>
<ogc:PropertyName>place</ogc:PropertyName>
<ogc:Literal>city</ogc:Literal>
</ogc:PropertyIsEqualTo>
<ogc:PropertyIsEqualTo>
<ogc:PropertyName>place</ogc:PropertyName>
<ogc:Literal>metropolis</ogc:Literal>
</ogc:PropertyIsEqualTo>
</ogc:Or>
</ogc:Filter>
<MinScaleDenominator>3000000.0</MinScaleDenominator>
<MaxScaleDenominator>1.25E7</MaxScaleDenominator>
<TextSymbolizer>
<Label>
<ogc:PropertyName>name</ogc:PropertyName>
</Label>
<Font>
<CssParameter name="font-family">SansSerif</CssParameter>
<CssParameter name="font-size">10</CssParameter>
<CssParameter name="font-style">normal</CssParameter>
<CssParameter name="font-weight">normal</CssParameter>
</Font>
<LabelPlacement>
<PointPlacement>
<AnchorPoint>
<AnchorPointX>
<ogc:Literal>0.5</ogc:Literal>
</AnchorPointX>
<AnchorPointY>
<ogc:Literal>0.5</ogc:Literal>
</AnchorPointY>
</AnchorPoint>
<Displacement>
<DisplacementX>0</DisplacementX>
<DisplacementY>10</DisplacementY>
</Displacement>
</PointPlacement>
</LabelPlacement>
<Halo>
<Radius>
<ogc:Literal>2</ogc:Literal>
</Radius>
<Fill>
<CssParameter name="fill">#FFFFFF</CssParameter>
<CssParameter name="fill-opacity">0.5</CssParameter>
</Fill>
</Halo>
<Fill>
<CssParameter name="fill">#2b2b2b</CssParameter>
</Fill>
<Graphic>
<ExternalGraphic>
<OnlineResource xmlns:xlink="http://www.w3.org/1999/xlink";
xlink:type="simple"
xlink:href="file:/pathto/styles/symbols/large-city.png" />
<Format>image/png</Format>
</ExternalGraphic>
<Size>8</Size>
</Graphic>
<VendorOption name="autoWrap">100</VendorOption>
<VendorOption name="spaceAround">20</VendorOption>
<VendorOption name="allowOverrun">true</VendorOption>
</TextSymbolizer>
</Rule>
Hope this helps
Cheers
Andrea
--
Andrea Aime
OpenGeo - http://opengeo.org
Expert service straight from the developers.
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