Hi everyone,
I have some NetCDFs of global gridded trends. The NetCDFs have both a trend
variable and a p-value variable, and for each NetCDF I've created a layer
for each of the variables, with the intention of styling each and creating
a layer group for them.
I've already created RasterSymbolizer-based styles for the trend layers
that use colour ramps. Now I'd like to create hatching-and-outline effect
for the p-value layers, only filling those areas where the p-value is <
0.05. I could just use another colour-ramp, but I'd rather not distort the
original colours too much.
I understand that . ahatching fill is not available with the
RasterSymbolizer, but it *is* doable with a PolygonSymbolizer. According to
the YSLD reference
<http://docs.geoserver.org/stable/en/user/styling/ysld/reference/symbolizers/index.html>,
the latter can actually be applied to a raster. Sure enough, when I create
a PolygonSymbolizer style and preview the p-value, I get a big, green
square the size of the map.
But introducing a filter to select only the grid cells < 0.05 isn't
working. Here's the SLD I'm trying to use:
<?xml version="1.0" encoding="ISO-8859-1"?>
<StyledLayerDescriptor version="1.0.0"
xsi:schemaLocation="http://www.opengis.net/sld
http://schemas.opengis.net/sld/1.0.0/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>Statistically significant trend (p lt 0.05)</Name>
<UserStyle>
<Title>Statistically significant trend (p lt 0.05)</Title>
<FeatureTypeStyle>
<Rule>
<Name>Stat. sig. (p < 0.05)</Name>
<ogc:Filter>
<ogc:PropertyIsLessThanOrEqualTo>
<ogc:PropertyName>quantity</ogc:PropertyName>
<ogc:Literal>0.05</ogc:Literal>
</ogc:PropertyIsLessThanOrEqualTo>
</ogc:Filter>
<PolygonSymbolizer>
<Fill>
<CssParameter name="fill">#D3FFD3</CssParameter>
<CssParameter name="fill-opacity">0.5</CssParameter>
</Fill>
<Stroke>
<CssParameter name="stroke">#6DB26D</CssParameter>
</Stroke>
</PolygonSymbolizer>
</Rule>
</FeatureTypeStyle>
</UserStyle>
</NamedLayer>
</StyledLayerDescriptor>
One problem could be the PropertyName value: I'm not sure whether to just
use 'quantity', or the band name (which is 'pvalue' for all of the layers I
want to use this style with) or the layer name (which varies). Or maybe
it's another problem—there are no validation errors, but the Layer Preview
gives me a broken file.
Does anyone have any thoughts on whether this is possible?
Cheers,
James
--
=================================================
James Goldie: PhD Student, Climate Change Research Centre
Email: j.gol...@unsw.edu.au, m...@rensa.co
Tel: +61 421 747 208
Skype: james-goldie
Web: https://rensa.co
------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
_______________________________________________
Geoserver-users mailing list
Please make sure you read the following two resources before posting to this
list:
- Earning your support instead of buying it, but Ian Turton:
http://www.ianturton.com/talks/foss4g.html#/
- The GeoServer user list posting guidelines:
http://geoserver.org/comm/userlist-guidelines.html
If you want to request a feature or an improvement, also see this:
https://github.com/geoserver/geoserver/wiki/Successfully-requesting-and-integrating-new-features-and-improvements-in-GeoServer
Geoserver-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/geoserver-users
