Hi Devs, having a polygon dataset, I want to show small polygons (<1m2) different from the rest of the polygons
I thought to use the 'area' function which according to this: http://docs.geoserver.org/stable/en/user/filter/function_reference.html would give: "The area of the specified geometry. Works in a Cartesian plane, the result will be in the same unit of measure as the geometry coordinates (which also means the results won’t make any sense for geographic data)" But what I observe here is that it returns the size in pixels, while data is in meters. Because zooming in I saw the style of some bigger polygons change (while off course the geometry area itself stays the same). Also showing the area in a label shows that on zooming in the area is changing on every zoomlevel... QUESTION: - is this supposed behaviour or is this a bug? - IS it possible to use the geometry area in filters/labels Note: Tried both Area and area Regards, Richard Duivenvoorde PS: example rule below <Rule> <Name>poly</Name> <Title>poly</Title> <ogc:Filter> <ogc:PropertyIsGreaterThan> <ogc:Function name="area"> <ogc:PropertyName>GEOM</ogc:PropertyName> </ogc:Function> <ogc:Literal>1.0</ogc:Literal> </ogc:PropertyIsGreaterThan> </ogc:Filter> <PolygonSymbolizer> <Fill> <CssParameter name="fill">#104DAF</CssParameter> <CssParameter name="fill-opacity"> <ogc:Literal>0.4</ogc:Literal> </CssParameter> </Fill> <Stroke> <CssParameter name="stroke">#104DAF</CssParameter> <CssParameter name="stroke-width">1</CssParameter> </Stroke> </PolygonSymbolizer> <TextSymbolizer> <Label> <ogc:Function name="Area"> <ogc:PropertyName>GEOM</ogc:PropertyName> </ogc:Function> </Label> <Font> <CssParameter name="font-family">Arial</CssParameter> <CssParameter name="font-size">14</CssParameter> <CssParameter name="font-style">normal</CssParameter> <CssParameter name="font-weight">bold</CssParameter> </Font> <LabelPlacement> <PointPlacement> <AnchorPoint> <AnchorPointX>0.5</AnchorPointX> <AnchorPointY>0.5</AnchorPointY> </AnchorPoint> </PointPlacement> </LabelPlacement> <Fill> <CssParameter name="fill">#000000</CssParameter> </Fill> </TextSymbolizer> </Rule> <Rule> <Name>point</Name> <Title>point</Title> <ogc:Filter> <ogc:PropertyIsLessThanOrEqualTo> <ogc:Function name="area"> <ogc:PropertyName>GEOM</ogc:PropertyName> </ogc:Function> <ogc:Literal>1</ogc:Literal> </ogc:PropertyIsLessThanOrEqualTo> </ogc:Filter> <PointSymbolizer> <Graphic> <ExternalGraphic> <OnlineResource xlink:type="simple" xlink:href="point.svg" /> <Format>image/svg+xml</Format> </ExternalGraphic> </Graphic> </PointSymbolizer> <PolygonSymbolizer> <Fill> <CssParameter name="fill">#ff0000</CssParameter> <CssParameter name="fill-opacity"> <ogc:Literal>0.4</ogc:Literal> </CssParameter> </Fill> <Stroke> <CssParameter name="stroke">#ff0000</CssParameter> <CssParameter name="stroke-width">1</CssParameter> </Stroke> </PolygonSymbolizer> </Rule> ------------------------------------------------------------------------------ _______________________________________________ Geoserver-devel mailing list Geoserver-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geoserver-devel
