001    //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_testing/src/org/deegree/io/arcinfo_raster/ArcInfoTextRasterWriter.java $
002    /*----------------------------------------------------------------------------
003     This file is part of deegree, http://deegree.org/
004     Copyright (C) 2001-2009 by:
005       Department of Geography, University of Bonn
006     and
007       lat/lon GmbH
008    
009     This library is free software; you can redistribute it and/or modify it under
010     the terms of the GNU Lesser General Public License as published by the Free
011     Software Foundation; either version 2.1 of the License, or (at your option)
012     any later version.
013     This library is distributed in the hope that it will be useful, but WITHOUT
014     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
015     FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
016     details.
017     You should have received a copy of the GNU Lesser General Public License
018     along with this library; if not, write to the Free Software Foundation, Inc.,
019     59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020    
021     Contact information:
022    
023     lat/lon GmbH
024     Aennchenstr. 19, 53177 Bonn
025     Germany
026     http://lat-lon.de/
027    
028     Department of Geography, University of Bonn
029     Prof. Dr. Klaus Greve
030     Postfach 1147, 53001 Bonn
031     Germany
032     http://www.geographie.uni-bonn.de/deegree/
033    
034     e-mail: info@deegree.org
035    ----------------------------------------------------------------------------*/
036    package org.deegree.io.arcinfo_raster;
037    
038    import java.io.FileOutputStream;
039    import java.io.IOException;
040    import java.io.PrintWriter;
041    
042    import org.deegree.model.coverage.grid.WorldFile;
043    
044    /**
045     * writes a raster in ArcInfo text format:<br>
046     *
047     * <pre>
048     *  ncols         1600
049     *  nrows         1600
050     *  xllcorner     3540000
051     *  yllcorner     5730000
052     *  cellsize      25
053     *  NODATA_value  -9999
054     *  120.4 132.5 99.9 ... 98.32
055     *  122.5 111.6 110.9 ... 88.77
056     *  ...
057     *  234.23 233.4 265.9 ... 334.7
058     * </pre>
059     *
060     *
061     * @version $Revision: 18195 $
062     * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
063     * @author last edited by: $Author: mschneider $
064     *
065     * @version 1.0. $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18 Jun 2009) $
066     *
067     * @since 2.0
068     */
069    public class ArcInfoTextRasterWriter {
070    
071        private String outFile;
072    
073        private float[][] data;
074    
075        private WorldFile wf;
076    
077        private double noData = -9999;
078    
079        /**
080         * it will be assumed that -9999 indicates noData values
081         *
082         * @param outFile
083         *            name of the output file
084         * @param data
085         *            data to write
086         * @param wf
087         *            metadata describing spatial location and resolution
088         */
089        public ArcInfoTextRasterWriter( String outFile, float[][] data, WorldFile wf ) {
090            this( outFile, data, wf, -9999 );
091        }
092    
093        /**
094         *
095         * @param outFile
096         *            name of the output file
097         * @param data
098         *            data to write
099         * @param wf
100         *            metadata describing spatial location and resolution
101         * @param noData
102         *            value used for marking noData values
103         */
104        public ArcInfoTextRasterWriter( String outFile, float[][] data, WorldFile wf, double noData ) {
105            this.outFile = outFile;
106            this.data = data;
107            this.wf = wf;
108            this.noData = noData;
109        }
110    
111        /**
112         * writes data to file
113         *
114         * @throws IOException
115         */
116        public void write()
117                                throws IOException {
118            PrintWriter pw = new PrintWriter( new FileOutputStream( outFile ) );
119            pw.println( "ncols " + data[0].length );
120            pw.println( "nrows " + data.length );
121            pw.println( "xllcorner " + wf.getEnvelope().getMin().getX() );
122            pw.println( "yllcorner " + wf.getEnvelope().getMin().getY() );
123            pw.println( "cellsize " + wf.getResx() );
124            pw.println( "nodata_value " + noData );
125            for ( int i = 0; i < data.length; i++ ) {
126                for ( int j = 0; j < data[i].length; j++ ) {
127                    pw.print( data[i][j] );
128                    pw.print( ' ' );
129                }
130                pw.println();
131            }
132            pw.close();
133        }
134    
135    }