Hi Simone,
I used the one in your example, with changed values that are to be
mapped, as follows:
Thanks
Martin
<?xml version="1.0" encoding="UTF-8" ?>
- <#> <StyledLayerDescriptor 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*";
xsi:schemaLocation="*http://www.opengis.net/sld
http://schemas.opengis.net/sld/1.0.0/StyledLayerDescriptor.xsd?*";
version="*1.0.0*">
- <#> <UserLayer>
<Name>raster_layer</Name>
- <#> <LayerFeatureConstraints>
<FeatureTypeConstraint />
</LayerFeatureConstraints>
- <#> <UserStyle>
<Name>raster</Name>
<Title>A boring default style</Title>
<Abstract>A sample style for rasters</Abstract>
- <#> <FeatureTypeStyle>
<FeatureTypeName>Feature</FeatureTypeName>
- <#> <Rule>
- <#> <RasterSymbolizer>
- <#> <!--
ColorMap type="ramp" extended="true">
<ColorMapEntry color="#000000" quantity="-1.0" opacity="1.0"/>
<ColorMapEntry color="#ff0000" quantity="0.0" opacity="1.0"/>
<ColorMapEntry color="#ffff00" quantity="1.0" opacity="1.0"/>
<ColorMapEntry color="#00ff00" quantity="2.0" opacity="1.0"/>
<ColorMapEntry color="#00ffff" quantity="3.0" opacity="1.0"/>
<ColorMapEntry color="#0000ff" quantity="4.0" opacity="1.0"/>
<ColorMapEntry color="#ff00ff" quantity="5.0" opacity="1.0"/>
<ColorMapEntry color="#ffffff" quantity="6.0" opacity="1.0"/>
</ColorMap
-->
<Opacity>1.0</Opacity>
- <#> <ChannelSelection>
- <#> <GrayChannel>
<SourceChannelName>1</SourceChannelName>
- <#> <ContrastEnhancement>
<Normalize />
</ContrastEnhancement>
</GrayChannel>
</ChannelSelection>
- <#> <ContrastEnhancement>
<GammaValue>1</GammaValue>
</ContrastEnhancement>
</RasterSymbolizer>
</Rule>
</FeatureTypeStyle>
</UserStyle>
</UserLayer>
</StyledLayerDescriptor>
Simone Giannecchini wrote:
Ciao Martin,
please, send over the SLD file you are using.
Simone.
-------------------------------------------------------
Ing. Simone Giannecchini
GeoSolutions S.A.S.
Owner - Software Engineer
Via Carignoni 51
55041 Camaiore (LU)
Italy
phone: +39 0584983027
fax: +39 0584983027
mob: +39 333 8128928
http://www.geo-solutions.it
http://simboss.blogspot.com/
http://www.linkedin.com/in/simonegiannecchini
-------------------------------------------------------
On Mon, Feb 16, 2009 at 5:57 PM, Martin Tomko <martin.to...@geo.uzh.ch> wrote:
Hi Simone,
I have solved the Style factory problem as follows:
SLDParser stylereader = new SLDParser(new StyleFactoryImpl() ,
sldfile);
I have imported the UserLayer, Style and all following classess from
org.geotools.styling (it seems that classes with the same name are also in
org.opemgis...). The methods called are shown as deprecated (I work with
2.5-SNAPSHOT thorugh maven). Anyway, I tried to use them.
I am not able to run your example because of the line:
rsh_SLD.visit(rs_1).show();
where
SubchainStyleVisitorCoverageProcessingAdapter rsh_SLD = new
RasterSymbolizerHelper(gc, null);
final RasterSymbolizer rs_1 = (RasterSymbolizer) rule.getSymbolizers()[0];
where show() cannot be invoked on a type void. Any idea why this is?
I tried a workaround (also tried through theexecute method):
GridCoverage2D tmpgc = (GridCoverage2D)rsh_SLD.getOutput();
tmpgc.show();
but I am getting the following error:
Feb 16, 2009 5:49:01 PM org.geotools.styling.SLDParser parseUserLayer
INFO: layer name: raster_layer
Exception in thread "main"
org.geotools.coverage.processing.CoverageProcessingException:
java.lang.NullPointerException
at
org.geotools.renderer.lite.gridcoverage2d.BaseCoverageProcessingNode.getOutput(BaseCoverageProcessingNode.java:339)
at
org.geotools.renderer.lite.gridcoverage2d.BaseCoverageProcessingNode.getOutput(BaseCoverageProcessingNode.java:42)
at
org.geotools.renderer.lite.gridcoverage2d.StyleVisitorCoverageProcessingNodeAdapter.getOutput(StyleVisitorCoverageProcessingNodeAdapter.java:180)
at ch.uzh.geo.tomko.GTViewshed.GTtest.main(GTtest.java:207)
Caused by: java.lang.NullPointerException
at
org.geotools.renderer.lite.gridcoverage2d.RasterSymbolizerHelper.execute(RasterSymbolizerHelper.java:69)
at
org.geotools.renderer.lite.gridcoverage2d.RasterSymbolizerHelper.execute(RasterSymbolizerHelper.java:48)
at
org.geotools.renderer.lite.gridcoverage2d.StyleVisitorCoverageProcessingNodeAdapter$1.execute(StyleVisitorCoverageProcessingNodeAdapter.java:140)
at
org.geotools.renderer.lite.gridcoverage2d.BaseCoverageProcessingNode.checkExecuted(BaseCoverageProcessingNode.java:235)
at
org.geotools.renderer.lite.gridcoverage2d.BaseCoverageProcessingNode.getOutput(BaseCoverageProcessingNode.java:337)
... 3 more
Any help more than welcome,
Martin
Simone Giannecchini wrote:
Ciao Martin,
a way to achieve that is by using the RasterSymbolizer (2.5.0 and
successive releases).
See http://docs.codehaus.org/display/GEOTOOLS/Raster+Symbolizer+support
for more information.
Simone.
-------------------------------------------------------
Ing. Simone Giannecchini
GeoSolutions S.A.S.
Owner - Software Engineer
Via Carignoni 51
55041 Camaiore (LU)
Italy
phone: +39 0584983027
fax: +39 0584983027
mob: +39 333 8128928
http://www.geo-solutions.it
http://simboss.blogspot.com/
http://www.linkedin.com/in/simonegiannecchini
-------------------------------------------------------
On Mon, Feb 16, 2009 at 3:59 PM, Martin Tomko <martin.to...@geo.uzh.ch>
wrote:
Dear all,
I am creating a gridcoverage2D (and consequently a geotiff, based on
processing of a source geotiff DEM), and I want to quickly visualize the
results of the analysis. Instead of opening it in some GIS, I would like
to assign a color model to the result.and display it through the show()
method. I tried to change the viewtype, but it does not seem to help.
My GridCoverage2D is created as follows:
WritableRaster hor = ...;
GridCoverage2D gchor = gcFactoryhor.create("hor", hor, env);
gchor.view(ViewType.GEOPHYSICS);
gchor.show();
and I use a GeoTiffWriter to output the geoTiff. Note that ArcMap open
the geotiff fine (requiring classification to assign colors), as well as
a normal image viewer (e.g., XnView), but the result is just a binary
nodata/anydata black and white rendering.
I see that it is possible to assign colors in the GridCoverage2D gchor =
gcFactoryhor.create(...) part, but I am not sure how to map the values
in the raster to the colors. Any hints welcome.
Thanks
Martin
------------------------------------------------------------------------------
Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco,
CA
-OSBC tackles the biggest issue in open source: Open Sourcing the
Enterprise
-Strategies to boost innovation and cut costs with open source
participation
-Receive a $600 discount off the registration fee with the source code:
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--
Martin Tomko
Postdoctoral Research Assistant
Geographic Information Systems Division
Department of Geography
University of Zurich - Irchel
Winterthurerstr. 190
CH-8057 Zurich, Switzerland
email: martin.to...@geo.uzh.ch
site: http://www.geo.uzh.ch/~mtomko
mob: +41-788 629 558
tel: +41-44-6355256
fax: +41-44-6356848
<?xml version="1.0" encoding="UTF-8"?>
<StyledLayerDescriptor 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";
xsi:schemaLocation="http://www.opengis.net/sld
http://schemas.opengis.net/sld/1.0.0/StyledLayerDescriptor.xsd?"; version="1.0.0">
<UserLayer>
<Name>raster_layer</Name>
<LayerFeatureConstraints>
<FeatureTypeConstraint/>
</LayerFeatureConstraints>
<UserStyle>
<Name>raster</Name>
<Title>A boring default style</Title>
<Abstract>A sample style for rasters</Abstract>
<FeatureTypeStyle>
<FeatureTypeName>Feature</FeatureTypeName>
<Rule>
<RasterSymbolizer>
<!-- ColorMap type="ramp" extended="true">
<ColorMapEntry color="#000000" quantity="-1.0" opacity="1.0"/>
<ColorMapEntry color="#ff0000" quantity="0.0" opacity="1.0"/>
<ColorMapEntry color="#ffff00" quantity="1.0" opacity="1.0"/>
<ColorMapEntry color="#00ff00" quantity="2.0" opacity="1.0"/>
<ColorMapEntry color="#00ffff" quantity="3.0" opacity="1.0"/>
<ColorMapEntry color="#0000ff" quantity="4.0" opacity="1.0"/>
<ColorMapEntry color="#ff00ff" quantity="5.0" opacity="1.0"/>
<ColorMapEntry color="#ffffff" quantity="6.0" opacity="1.0"/>
</ColorMap -->
<Opacity>1.0</Opacity>
<ChannelSelection>
<GrayChannel>
<SourceChannelName>1</SourceChannelName>
<ContrastEnhancement>
<Normalize/>
</ContrastEnhancement>
</GrayChannel>
</ChannelSelection>
<ContrastEnhancement>
<GammaValue>1</GammaValue>
</ContrastEnhancement>
</RasterSymbolizer>
</Rule>
</FeatureTypeStyle>
</UserStyle>
</UserLayer>
</StyledLayerDescriptor>
------------------------------------------------------------------------------
Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA
-OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise
-Strategies to boost innovation and cut costs with open source participation
-Receive a $600 discount off the registration fee with the source code: SFAD
http://p.sf.net/sfu/XcvMzF8H
_______________________________________________
Geotools-gt2-users mailing list
Geotools-gt2-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
