When I try to display a georeferenced png image I get the following
exception:
WARNING: FilteredSubsample Subsample scale factors must be positive.
java.lang.IllegalArgumentException: FilteredSubsample Subsample scale
factors must be positive.
at javax.media.jai.JAI.createNS(JAI.java:1087)
at javax.media.jai.JAI.create(JAI.java:973)
at
org.geotools.coverage.processing.operation.FilteredSubsampledGridCoverage2D.create(FilteredSubsampledGridCoverage2D.java:220)
at
org.geotools.coverage.processing.operation.FilteredSubsample.doOperation(FilteredSubsample.java:132)
at
org.geotools.renderer.lite.gridcoverage2d.GridCoverageRenderer.filteredSubsample(GridCoverageRenderer.java:924)
at
org.geotools.renderer.lite.gridcoverage2d.GridCoverageRenderer.paint(GridCoverageRenderer.java:553)
at
nz.co.niwa.geotools.StreamingRenderer.renderRaster(StreamingRenderer.java:1909)
at
nz.co.niwa.geotools.StreamingRenderer.processSymbolizers(StreamingRenderer.java:1685)
at
nz.co.niwa.geotools.StreamingRenderer.process(StreamingRenderer.java:1628)
at
nz.co.niwa.geotools.StreamingRenderer.processStylers(StreamingRenderer.java:1570)
at
nz.co.niwa.geotools.StreamingRenderer.paint(StreamingRenderer.java:560)
at
nz.co.niwa.geotools.StreamingRenderer.paint(StreamingRenderer.java:415)
at nz.co.niwa.geotools.JMapPane.paintComponent(JMapPane.java:416)
So there's something funny with this particular png (since I can
display others just fine). Any ideas where to begin to address this
problem? Since the png's I work with are created in a pre-processing
step from tabular
data, perhaps there's something that is going wrong during that process?
Thanx
gaby
--
***************************************************************
** Gabriella Turek [EMAIL PROTECTED] **
** National Institute of Water & Atmospheric Research (NIWA) **
** PO Box 8602 Christchurch New Zealand +64-3-348-8987x3724 **
***************************************************************
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