Hello,
I am wondering if CQL expression can be applied to a multibanded raster. I
have a raster that has 10+* bands and I want to have the visualiz
presentation change with input from the user. I successfully loaded the
data into geoserver and each band is present in the raster.
Currently this is error I am receiving in geoserver
Caused by: org.geoserver.platform.ServiceException:
java.lang.IllegalArgumentException: Band number -1 is not valid.
at
org.geoserver.wms.map.RenderedImageMapOutputFormat.directRasterRender(RenderedImageMapOutputFormat.java:990)
at
org.geoserver.wms.map.RenderedImageMapOutputFormat.produceMap(RenderedImageMapOutputFormat.java:340)
... 111 more
Caused by: java.lang.IllegalArgumentException: Band number -1 is not valid.
at
org.geotools.renderer.lite.gridcoverage2d.BandSelectionNode.visit(BandSelectionNode.java:210)
at
org.geotools.renderer.lite.gridcoverage2d.ChannelSelectionNode.visit(ChannelSelectionNode.java:152)
at
org.geotools.renderer.lite.gridcoverage2d.RasterSymbolizerHelper.visit(RasterSymbolizerHelper.java:210)
at
org.geotools.renderer.lite.gridcoverage2d.GridCoverageRenderer.symbolize(GridCoverageRenderer.java:464)
at
org.geotools.renderer.lite.gridcoverage2d.GridCoverageRenderer.renderImage(GridCoverageRenderer.java:912)
at
org.geotools.renderer.lite.gridcoverage2d.GridCoverageRenderer.renderImage(GridCoverageRenderer.java:750)
at
org.geoserver.wms.map.RenderedImageMapOutputFormat.directRasterRender(RenderedImageMapOutputFormat.java:883)
... 112 more
Caused by: java.lang.NumberFormatException: For input string:
"${env('bandnum',2)}"
at
java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:481)
at java.lang.Integer.parseInt(Integer.java:527)
at
org.geotools.renderer.lite.gridcoverage2d.BandSelectionNode.visit(BandSelectionNode.java:207)
Seems that CQL expressions are not supported for this yet? Is there another
way I can go about it. Visualization works fine if I specify a new SLD with
the SourceChannelName set to band value (0-10)
<Rule>
<RasterSymbolizer>
<ChannelSelection>
<GrayChannel>
<SourceChannelName>${env('bandnum',2)}</SourceChannelName>
</GrayChannel>
</ChannelSelection>
<ContrastEnhancement>
<Normalize/>
</ContrastEnhancement>
</RasterSymbolizer>
</Rule>
--
David Haynes, Ph.D.
Research Associate Terra Populus
Minnesota Population Center
612-626-3933
www.terrapop.org
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