Hi Eleanor,
when you do a GetLengedGraphic request the wms_scale_denominator value is
null, and everything
goes belly up from there, the overall resulting size is likely 0 or null.
The env function accepts a second literal, which would be the default value
in case the variable is not found,
try adding one.
As an alternative, you could see what happens if you avoid doing scale math
and just set the icon size in
ground units, see:
http://docs.geoserver.org/stable/en/user/styling/sld/extensions/uom.html#specifying-symbolizer-sizes-in-ground-units
Cheers
Anderea
On Fri, May 4, 2018 at 10:11 AM, Michie, Eleanor <
eleanor.mic...@salford.gov.uk> wrote:
> Dear All
>
>
>
> I have a style which uses the scale to determine the icon size (see
> below). This previously worked fine. However, recently it has stopped
> working and does not generate a legend graphic properly (shows text, in
> this case ‘star’, but no icons). To be clear, it is only the legend that is
> the problem, on the map the style still works.
>
>
>
> <NamedLayer>
>
> <Name>star</Name>
>
> <UserStyle>
>
> <FeatureTypeStyle>
>
> <Rule>
>
> <Name>star</Name>
>
> <PointSymbolizer>
>
> <Graphic>
>
> <Mark>
>
> <WellKnownName>star</WellKnownName>
>
> <Fill>
>
> <CssParameter name="fill">#00ff00</CssParameter>
>
> </Fill>
>
> </Mark>
>
> <Size>
>
> <ogc:Add>
>
> <ogc:Mul>
>
> <ogc:Function name="env">
>
> <ogc:Literal>wms_scale_denominator</ogc:Literal>
>
> </ogc:Function>
>
> <ogc:Literal>-0.00001</ogc:Literal>
>
> </ogc:Mul>
>
> <ogc:Literal>20</ogc:Literal>
>
> </ogc:Add>
>
> </Size>
>
> </Graphic>
>
> </PointSymbolizer>
>
> </Rule>
>
> </FeatureTypeStyle>
>
> </UserStyle>
>
> </NamedLayer>
>
>
>
> Any help would be greatly appreciated.
>
>
>
> Many thanks
>
> Eleanor Michie
>
>
>
>
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