Simone,
thanks so much for your help, here it is;
code snippet:
somewhere in my processing chain, I set up cell values as follows:
WritableRaster myraster
myraster.setSample(xx, yy, 0, 6);
and then:
GridCoverageFactory gcFactory = new GridCoverageFactory();
GridCoverage2D gchor = gcFactoryhor.create("test", myraster, envelope);
File sldfile = new File("C:\\dev\\GTViewshed\\tmp\\gcstyle.sld");
SLDParser stylereader = new SLDParser(new StyleFactoryImpl() ,
sldfile);
StyledLayerDescriptor sld = stylereader.parseSLD();
// the RasterSymbolizer Helper
SubchainStyleVisitorCoverageProcessingAdapter rsh_SLD = new
RasterSymbolizerHelper(gchor, null);
// build the RasterSymbolizer
final UserLayer nl = (UserLayer) sld.getStyledLayers()[0];
final Style style = nl.getUserStyles()[0];
final FeatureTypeStyle fts = style.getFeatureTypeStyles()[0];
final Rule rule = fts.getRules()[0];
final RasterSymbolizer rs_1 = (RasterSymbolizer)
rule.getSymbolizers()[0];
// visit the RasterSymbolizer
//GridCoverage2D tmpgc = (GridCoverage2D)rsh_SLD.getOutput();
//tmpgc.show();
rsh_SLD.visit(rs_1);
((GridCoverage2D)rsh_SLD.getOutput()).show();
gdalinfo horizon5.tif:
Driver: GTiff/GeoTIFF
Files: horizon5.tif
Size is 240, 301
Coordinate System is:
GEOGCS["WGS 84",
DATUM["WGS_1984",
SPHEROID["WGS 84",6378137,298.2572235630016,
AUTHORITY["EPSG","7030"]],
AUTHORITY["EPSG","6326"]],
PRIMEM["Greenwich",0],
UNIT["degree",0.0174532925199433],
AUTHORITY["EPSG","4326"]]
Origin = (7.000416666666666,46.199584717607976)
Pixel Size = (0.000833333333333,-0.000830564784053)
Metadata:
AREA_OR_POINT=Point
TIFFTAG_XRESOLUTION=1
TIFFTAG_YRESOLUTION=1
TIFFTAG_RESOLUTIONUNIT=1 (unitless)
Image Structure Metadata:
INTERLEAVE=BAND
Corner Coordinates:
Upper Left ( 7.0004167, 46.1995847) ( 7d 0'1.50"E, 46d11'58.50"N)
Lower Left ( 7.0004167, 45.9495847) ( 7d 0'1.50"E, 45d56'58.50"N)
Upper Right ( 7.2004167, 46.1995847) ( 7d12'1.50"E, 46d11'58.50"N)
Lower Right ( 7.2004167, 45.9495847) ( 7d12'1.50"E, 45d56'58.50"N)
Center ( 7.1004167, 46.0745847) ( 7d 6'1.50"E, 46d 4'28.50"N)
Band 1 Block=240x17 Type=Int16, ColorInterp=Gray
the sld :
<?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="#ffffff" quantity="-1.0" opacity="1.0"/>
<ColorMapEntry color="#000000" 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="#ff0000" quantity="6.0" opacity="1.0"/>
</ColorMap -->
<Opacity>1.0</Opacity>
<ChannelSelection>
<GrayChannel>
<SourceChannelName>1</SourceChannelName>
</GrayChannel>
</ChannelSelection>
</RasterSymbolizer>
</Rule>
</FeatureTypeStyle>
</UserStyle>
</UserLayer>
</StyledLayerDescriptor>
thanks,
Martin
Simone Giannecchini wrote:
> Ciao Martin,
> yeah, you are correct.
>
> However, I need to know a few things (yesterday I sent you back stuff
> in a rush I might have given you bad code :-) ).
>
> 1> your sld
> 2> code snippet
> 3> gdalinfo of a sample geotiff
>
>
> 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 Tue, Feb 17, 2009 at 12:25 PM, Martin Tomko <martin.to...@geo.uzh.ch>
> wrote:
>
>> Hi Simone,
>> thanks for the exaplanation. I would still like to use the acceleration
>> provided through the mlib wrapper, is there a way to use it through maven?
>>
>> Regarding the colors: all the cells are displayed in shades of grey, despite
>> my styling that contains something like:
>> <ColorMapEntry color="#ffffff" quantity="-1.0" opacity="1.0"/>
>> <ColorMapEntry color="#000000" 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="#ff0000" quantity="6.0" opacity="1.0"/>
>> So, for instance, I would assume cells with a value of 6 to be rendered as
>> #ff0000 (red), is that right?
>>
>> Thanks
>> Martin
>>
>> Simone Giannecchini wrote:
>>
>>> Ciao Martin,
>>> what you are seeing is just a warning, the only consequence (or at
>>> least the one you should care of) is that JAI will work in pure java
>>> mode, withou native acceleration.
>>>
>>> About the shaded gray, can you be more specific?
>>>
>>>
>>> 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 Tue, Feb 17, 2009 at 11:46 AM, Martin Tomko <martin.to...@geo.uzh.ch>
>>> wrote:
>>>
>>>
>>>> Dear Simone,
>>>> thank you very much for the simplified sld and the code. Indeed, there is
>>>> progress: the change to the last two lines :
>>>>
>>>> rsh.visit(rs);
>>>> ((GridCoverage2D)rsh.getOutput()).show();
>>>>
>>>> helped. I guess this is the way it should be included in the tutorial as
>>>> well. However, not all is good yet - while I get the output, it is all
>>>> only
>>>> in shades of grey, and I am getting the followng error (see stack trace
>>>> at
>>>> the end of the message). My reading is that it results from the missing
>>>> library (I think the JAI libraries, specially mlibwrapper_jai.jar ). Now,
>>>> I
>>>> did not install the jai on my machine, as I ues maven to handle my
>>>> classpaths. I searched for a dependency for mlibwrapper_jai.jar without
>>>> success (tried:
>>>> <dependency>
>>>> <groupId>javax.media</groupId>
>>>> <artifactId>mlibwrapper_jai</artifactId>
>>>> <version>${jai.version}</version>
>>>> </dependency>)
>>>> but that throws errors. Even in mvnbrowser there is not artefact declared
>>>> for this class. I have found soem discussion pointing to this requirement
>>>> in
>>>> the new geotools
>>>>
>>>> (http://www.mail-archive.com/geotools-de...@lists.sourceforge.net/msg16471.html).
>>>> Is there a way to run this without the mlibwrapper_jai yet, or a way to
>>>> add this as a dependency in the maven build? As I am going to package my
>>>> program as a webservice, I cannot rely on external installation of jai, I
>>>> am
>>>> afraid.
>>>>
>>>> Thanks a lot for all the help.
>>>>
>>>> Martin
>>>>
>>>>
>>>>
>>>>
>>>> Feb 17, 2009 11:37:13 AM org.geotools.styling.SLDParser parseUserLayer
>>>> INFO: layer name: raster_layer
>>>> Error: Could not find mediaLib accelerator wrapper classes. Continuing in
>>>> pure Java mode.
>>>> Occurs in: com.sun.media.jai.mlib.MediaLibAccessor
>>>> java.lang.NoClassDefFoundError: com/sun/medialib/mlib/Image
>>>> at
>>>> com.sun.media.jai.mlib.MediaLibAccessor$1.run(MediaLibAccessor.java:248)
>>>> at java.security.AccessController.doPrivileged(Native Method)
>>>> at
>>>>
>>>> com.sun.media.jai.mlib.MediaLibAccessor.setUseMlib(MediaLibAccessor.java:245)
>>>> at
>>>>
>>>> com.sun.media.jai.mlib.MediaLibAccessor.useMlib(MediaLibAccessor.java:177)
>>>> at
>>>>
>>>> com.sun.media.jai.mlib.MediaLibAccessor.isMediaLibCompatible(MediaLibAccessor.java:357)
>>>> at com.sun.media.jai.mlib.MlibExtremaRIF.create(MlibExtremaRIF.java:44)
>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>> at
>>>>
>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>>>> at
>>>>
>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>>>> at java.lang.reflect.Method.invoke(Method.java:597)
>>>> at javax.media.jai.FactoryCache.invoke(FactoryCache.java:122)
>>>> at
>>>>
>>>> javax.media.jai.OperationRegistry.invokeFactory(OperationRegistry.java:1674)
>>>> at
>>>>
>>>> javax.media.jai.ThreadSafeOperationRegistry.invokeFactory(ThreadSafeOperationRegistry.java:473)
>>>> at javax.media.jai.registry.RIFRegistry.create(RIFRegistry.java:332)
>>>> at javax.media.jai.RenderedOp.createInstance(RenderedOp.java:819)
>>>> at javax.media.jai.RenderedOp.createRendering(RenderedOp.java:867)
>>>> at javax.media.jai.RenderedOp.getRendering(RenderedOp.java:888)
>>>> at javax.media.jai.RenderedOp$1.getPropertyNames(RenderedOp.java:1791)
>>>> at
>>>>
>>>> javax.media.jai.PropertyEnvironment.mapDefaults(PropertyEnvironment.java:270)
>>>> at
>>>>
>>>> javax.media.jai.PropertyEnvironment.getPropertyNames(PropertyEnvironment.java:125)
>>>> at
>>>>
>>>> javax.media.jai.WritablePropertySourceImpl.addProperties(WritablePropertySourceImpl.java:298)
>>>> at javax.media.jai.RenderedOp.createPropertySource(RenderedOp.java:1817)
>>>> at javax.media.jai.RenderedOp.getProperty(RenderedOp.java:1968)
>>>> at
>>>> org.geotools.image.ImageWorker.getComputedProperty(ImageWorker.java:585)
>>>> at org.geotools.image.ImageWorker.getExtremas(ImageWorker.java:605)
>>>> at org.geotools.image.ImageWorker.rescaleToBytes(ImageWorker.java:748)
>>>> at
>>>>
>>>> org.geotools.renderer.lite.gridcoverage2d.RasterSymbolizerHelper.execute(RasterSymbolizerHelper.java:108)
>>>> 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)
>>>> 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:209)
>>>> Caused by: java.lang.ClassNotFoundException: com.sun.medialib.mlib.Image
>>>> at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
>>>> at java.security.AccessController.doPrivileged(Native Method)
>>>> at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
>>>> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
>>>> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
>>>> at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
>>>> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
>>>> ... 34 more
>>>>
>>>>
>>>>
>>>>
>>>> Simone Giannecchini wrote:
>>>>
>>>>
>>>>> Ciao Martin,
>>>>> I copied and pasted (with few modifications) your stile inside the
>>>>> renderer tests and it worked. I am attaching it to this email.
>>>>>
>>>>> The code used is as follows:
>>>>>
>>>>> RasterSymbolizerHelper rsh = new
>>>>> RasterSymbolizerHelper(gc,
>>>>> null);
>>>>> final UserLayer nl = (UserLayer) sld.getStyledLayers()[0];
>>>>> final Style style = nl.getUserStyles()[0];
>>>>> final FeatureTypeStyle fts =
>>>>> style.getFeatureTypeStyles()[0];
>>>>> final Rule rule = fts.getRules()[0];
>>>>> RasterSymbolizer rs = (RasterSymbolizer)
>>>>> rule.getSymbolizers()[0];
>>>>> rsh.visit(rs);
>>>>> ((GridCoverage2D)rsh.getOutput()).show();
>>>>>
>>>>> What are the characteristics of your data? A gdalinfo might help.
>>>>>
>>>>> Let me know if this works.
>>>>>
>>>>> 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 6:15 PM, Martin Tomko <martin.to...@geo.uzh.ch>
>>>>> wrote:
>>>>>
>>>>>
>>>>>
>>>>>> 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:
>>>>>>>>>> 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
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>> --
>>>>>> 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
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>
>
>
--
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
------------------------------------------------------------------------------
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
