Two things I’d like to note:
1. I can make GetMap and GetFeatureInfo requests just fine over the entire
area covered by the dataset. Only GetLegendGraphic fails.
2. As you can see from the table definition, the parameter to the function
is a double. I’ll admit that there are NULL values in a few rows, but why
should that prevent GeoServer from generating a legend?
Fra: Ian Turton [mailto:[email protected]]
Sendt: 15. februar 2017 16:07
Til: Julian Hollingbery <[email protected]>
Cc: [email protected]
Emne: Re: [Geoserver-users] GetLegendGraphic fails if SLD uses filter function
round
Nope it isn't a bug - the error is quite clear
<ServiceException>
java.lang.IllegalArgumentException: Filter Function problem for function
round argument #0 - expected type float
Filter Function problem for function round argument #0 - expected type float
</ServiceException></ServiceExceptionReport>
You are passing something that isn't a number into the round function - you'll
either need to check your attributes or add a check to the SLD to limit the
input to numbers (probably with an if_then_else and a regexp)
On 15 February 2017 at 14:51, Julian Hollingbery
<[email protected]<mailto:[email protected]>> wrote:
Hi list,
I wonder if anyone else has seen something like this.
I have a PostGIS table defined basically as
CREATE TABLE vdline
(
ogc_fid serial NOT NULL,
hast_gener character varying,
kode_hast0 character varying,
hast_lokal double precision,
hast_gaeld double precision,
hast_anbef double precision,
hast_var_h character varying,
geometri geometry(MultiLineString),
CONSTRAINT vdline_pkey PRIMARY KEY (ogc_fid)
)
WITH (
OIDS=FALSE
);
I publish it through GeoServer 2.9.1, using a style looking basically like 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";>
<NamedLayer>
<Name>vdline</Name>
<UserStyle>
<Title>Hastighedsgrænser</Title>
<Abstract>Visualisering af hastighedsgrænsedata</Abstract>
<FeatureTypeStyle>
<Rule>
<Name>Skiltet hastighed
40</Name>
<Title>Skiltet
hastighed 40 km/t</Title>
<Abstract>Skiltet
hastighed (hast_lokal) 40 km/t. Etiket viser gældende hastighed
(hast_gaeld)</Abstract>
<ogc:Filter>
<ogc:PropertyIsEqualTo>
<ogc:PropertyName>hast_lokal</ogc:PropertyName>
<ogc:Literal>40</ogc:Literal>
</ogc:PropertyIsEqualTo>
</ogc:Filter>
<LineSymbolizer>
<Stroke>
<CssParameter name="stroke">#0000ff</CssParameter>
<CssParameter name="stroke-width">1</CssParameter>
</Stroke>
</LineSymbolizer>
<TextSymbolizer>
<Label>
<ogc:Function
name="round"><ogc:PropertyName>hast_gaeld</ogc:PropertyName></ogc:Function>
</Label>
<Font>
<CssParameter name="font-size">10</CssParameter>
<CssParameter
name="font-family">Arial</CssParameter>
<CssParameter
name="font-color">#0000aa</CssParameter>
</Font>
<LabelPlacement>
<LinePlacement>
<PerpendicularOffset>0</PerpendicularOffset>
</LinePlacement>
</LabelPlacement>
<Halo>
<Radius>
<ogc:Literal>1</ogc:Literal>
</Radius>
<Fill>
<CssParameter
name="fill">#f4faf6</CssParameter>
</Fill>
</Halo>
<Fill>
<CssParameter name="fill">#0000aa</CssParameter>
</Fill>
<VendorOption name="maxDisplacement">50</VendorOption>
<VendorOption name="removeOverlaps">true</VendorOption>
<VendorOption name="followLine">true</VendorOption>
<VendorOption name="group">true</VendorOption>
</TextSymbolizer>
</Rule>
</FeatureTypeStyle>
</UserStyle>
</NamedLayer>
</StyledLayerDescriptor>
The complete SLD contains multiple <FeatureTypeStyle>s for various values of
<PropertyName>hast_lokal</PropertyName>.
If I make a GetLegendGraphic-request like
http://hostname/workspace/wms?service=WMS&version=1.1.0&request=GetLegendGraphic&layer=vdline&format=image/png
I get the error:
<?xml version="1.0" encoding="UTF-8" standalone="no"?><!DOCTYPE
ServiceExceptionReport SYSTEM
"http://gs.demo.geoteamwork.com:80/schemas/wms/1.1.1/WMS_exception_1_1_1.dtd";>
<ServiceExceptionReport version="1.1.1" > <ServiceException>
java.lang.IllegalArgumentException: Filter Function problem for function
round argument #0 - expected type float
Filter Function problem for function round argument #0 - expected type float
</ServiceException></ServiceExceptionReport>
If I modify the SLD, specifically the <Label>, removing the <ogc:Function
name=”round”>, so that it becomes
<Label>
<ogc:PropertyName>hast_gaeld</ogc:PropertyName>
</Label>
I get a nice legend. Is that a bug?
Regards,
/julian
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