Hello users,
I'm beginner with Geotools. I would like to work with Coverages. So I
downloaded from internet example FloatRasterDemo.java a defined libraries
(jars). But during running I received exception and I don't know where is
the problem.
Can anybody help me?
This is FloatRaterDemo.java code
package org.geotools.demo.coverage;
// J2SE and JAI dependencies
import java.awt.Color;
import java.awt.image.DataBuffer;
import java.awt.image.WritableRaster;
import javax.media.jai.RasterFactory; //jai-core-1.1.3.jar
// GeoAPI dependencies
import org.opengis.coverage.grid.GridCoverage; //geoapi.jar
//import org.opengis.spatialschema.geometry.Envelope;
import org.opengis.geometry.Envelope; //geoapi.jar
import org.opengis.referencing.crs.CoordinateReferenceSystem; //geoapi.jar
// Geotools dependencies
import org.geotools.geometry.Envelope2D; //gt2-referencing-2.5-M1.jar
import org.geotools.coverage.grid.GridCoverage2D; //gt2-coverage-2.5-M1.jar
import org.geotools.coverage.grid.GridCoverageFactory;
//gt2-coverage-2.5-M1.jar
import org.geotools.referencing.crs.DefaultGeographicCRS;
//gt2-referencing-2.5-M1.jar
import org.geotools.coverage.FactoryFinder; //gt2-coverage-2.5-M1.jar
//implements org.opengis.spatialschema.geometry.Envelope,
org.opengis.util.Cloneable
/**
* A simple demo computing a {...@linkplain WritableRaster raster} and
displaying it. The raster uses
* {...@code float} data type with arbitrary sample values. This demo consider
the image as one and
* only one tile. Consequently, sample values are set directly in the raster
(no need to deal for
* multi-tiles).
*
* @source $URL:
http://svn.geotools.org/trunk/demo/coverage-use/src/main/java/org/geotools/demo/coverage/FloatRasterDemo.java$
* @version $Id: FloatRasterDemo.java 30570 2008-06-08 11:46:24Z acuster $
* @author Martin Desruisseaux
*/
public class FloatRasterDemo extends junit.framework.TestCase {
/**
* Run the demo.
*/
public static void main(String[] args) {
/*
* Set the pixel values. Because we use only one tile with one
band, the code below
* is pretty similar to the code we would have if we were just
setting the values in
* a matrix.
*/
final int width = 500;
final int height = 500;
WritableRaster raster =
RasterFactory.createBandedRaster(DataBuffer.TYPE_FLOAT,
width,
height, 1, null);
for (int y=0; y<height; y++) {
for (int x=0; x<width; x++) {
raster.setSample(x, y, 0, x+y);
}
}
/*
* Set some metadata (the CRS, the geographic envelope, etc.) and
display the image.
* The display may be slow, since the translation from
floating-point values to some
* color (or grayscale) is performed on the fly everytime the image
is rendered.
*/
System.out.println("pred 1");
CoordinateReferenceSystem crs = DefaultGeographicCRS.WGS84;
//org.opengis.spatialschema.geometry.Envelope envelope =
(Envelope)new Envelope2D(crs, 0, 0, 30, 30);
Envelope2D envelope=new Envelope2D(crs,0,0,30,30);
GridCoverageFactory factory =
FactoryFinder.getGridCoverageFactory(null);
// FactoryFinder.getGridCoverageFactory(null);
try
{
System.out.println("Pred factory.create");
System.out.println(envelope.toString());
GridCoverage gc = factory.create("My grayscale coverage", raster,
envelope);
((GridCoverage2D) gc).show(); // Convenience method specific to
Geotools.
}
catch(Exception ex) {
System.out.println(ex.getMessage());
}
/*
* The above example created a grayscale image. The example below
creates a new grid
* coverage for the same data, but using a specified color map. Note
that the factory
* used allows more details to be specified, for example units.
Setting some of those
* arguments to null (as in this example) lets GridCoverage computes
automatically a
* default value.
*/
/* Color[] colors = new Color[] {Color.BLUE, Color.CYAN, Color.WHITE,
Color.YELLOW, Color.RED};
gc = factory.create("My colored coverage", raster, envelope, null,
null, null, new Color[][] {colors}, null);
((GridCoverage2D) gc).geophysics(false).show();
*/
}
public void testCoverage() {
main(null);
}
}
And there is list with jars I used:
gt2-covage-2.5-M1.jar
gt2-api-2.5-M1.jar
jts-1.8.jar
gt2-referencing-2.5-M1.jar
vecmath-1.3.1.jar
commons-pool-1.3.jar
gt2-metadata-2.5-M1.jar
geoapi-nogenerics-2.1-M8.jar
jsr108-0.01.jar
concurrent-1.3.4.jar
gt2-main-2.5-M1.jar
jdom-1.0.jar
commons-beanutils-1.7.0.jar
commons-logging-1.0.3.jar
jai_core-1.1.3.jar
junit-3.8.1.jar
This is exception message:
Exception in thread "main" java.lang.NoClassDefFoundError:
com.sun.media.jai.codec.SeekableStream
at javax.media.jai.operator.BMPDescriptor.class$(BMPDescriptor.java:86)
at
javax.media.jai.operator.BMPDescriptor.<clinit>(BMPDescriptor.java:85)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:164)
at
javax.media.jai.RegistryFileParser.getInstance(RegistryFileParser.java:216)
at
javax.media.jai.RegistryFileParser.registerDescriptor(RegistryFileParser.java:352)
at
javax.media.jai.RegistryFileParser.parseFile(RegistryFileParser.java:287)
at
javax.media.jai.RegistryFileParser.loadOperationRegistry(RegistryFileParser.java:47)
at
javax.media.jai.OperationRegistry.initializeRegistry(OperationRegistry.java:363)
at javax.media.jai.JAI.<clinit>(JAI.java:560)
at
org.geotools.coverage.GridSampleDimension.<clinit>(GridSampleDimension.java:1569)
at
org.geotools.coverage.grid.GridCoverageFactory.create(GridCoverageFactory.java:317)
at
org.geotools.coverage.grid.GridCoverageFactory.create(GridCoverageFactory.java:270)
at
org.geotools.demo.coverage.FloatRasterDemo.main(FloatRasterDemo.java:72)
which occurred at
GridCoverage gc = factory.create("My grayscale coverage", raster,
envelope);
Thank you for everything
Martin Striz
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