001    /*
002     * Copyright (C) 2008-2010 by Holger Arndt
003     *
004     * This file is part of the Universal Java Matrix Package (UJMP).
005     * See the NOTICE file distributed with this work for additional
006     * information regarding copyright ownership and licensing.
007     *
008     * UJMP is free software; you can redistribute it and/or modify
009     * it under the terms of the GNU Lesser General Public License as
010     * published by the Free Software Foundation; either version 2
011     * of the License, or (at your option) any later version.
012     *
013     * UJMP is distributed in the hope that it will be useful,
014     * but WITHOUT ANY WARRANTY; without even the implied warranty of
015     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
016     * GNU Lesser General Public License for more details.
017     *
018     * You should have received a copy of the GNU Lesser General Public
019     * License along with UJMP; if not, write to the
020     * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
021     * Boston, MA  02110-1301  USA
022     */
023    
024    package org.ujmp.core.io;
025    
026    import java.io.File;
027    import java.io.OutputStream;
028    import java.io.OutputStreamWriter;
029    import java.io.Writer;
030    
031    import org.ujmp.core.Matrix;
032    import org.ujmp.core.util.StringUtil;
033    import org.ujmp.core.util.io.IntelligentFileWriter;
034    
035    public abstract class ExportMatrixPLT {
036    
037            public static void toFile(File file, Matrix matrix, Object... parameters) throws Exception {
038                    IntelligentFileWriter writer = new IntelligentFileWriter(file);
039                    toWriter(writer, matrix, parameters);
040                    writer.close();
041            }
042    
043            public static void toStream(OutputStream outputStream, Matrix matrix, Object... parameters)
044                            throws Exception {
045                    OutputStreamWriter writer = new OutputStreamWriter(outputStream);
046                    toWriter(writer, matrix, parameters);
047                    writer.close();
048            }
049    
050            public static void toWriter(Writer writer, Matrix matrix, Object... parameters)
051                            throws Exception {
052                    String EOL = System.getProperty("line.separator");
053                    boolean xy = false;
054                    boolean logx = false;
055                    boolean logy = false;
056                    for (Object o : parameters) {
057                            String s = StringUtil.getString(o);
058                            if ("logx".equalsIgnoreCase(s)) {
059                                    logx = true;
060                            } else if ("logy".equalsIgnoreCase(s)) {
061                                    logy = true;
062                            } else if ("xy".equalsIgnoreCase(s)) {
063                                    xy = true;
064                            }
065                    }
066    
067                    writeData(writer, matrix, xy, logx, logy);
068                    writer.write("pause -1 'Export plot to eps?'" + EOL);
069                    writer.write("set output 'plot" + System.currentTimeMillis() + ".eps'" + EOL);
070                    writer.write("set terminal postscript eps" + EOL);
071                    writer.write("replot" + EOL);
072                    writeData(writer, matrix, xy, logx, logy);
073            }
074    
075            private static void writeData(Writer writer, Matrix matrix, boolean xy, boolean logx,
076                            boolean logy) throws Exception {
077                    String EOL = System.getProperty("line.separator");
078                    writer.write("set key outside below" + EOL);
079                    writer.write("set autoscale fix" + EOL);
080                    if (logx && logy) {
081                            writer.write("set log xy" + EOL);
082                    } else if (logx) {
083                            writer.write("set log x" + EOL);
084                    } else if (logx) {
085                            writer.write("set log x" + EOL);
086                    }
087                    if (xy) {
088                            String x = matrix.getColumnLabel(0);
089                            x = x == null ? "column 0" : x;
090                            writer.write("set xlabel '" + x + "'" + EOL);
091                    } else {
092                            writer.write("set xlabel 'column'" + EOL);
093                    }
094                    // writer.write("set ylabel 'value'" + EOL);
095                    writer.write("set title '" + StringUtil.format(matrix.getLabel()) + "'" + EOL);
096                    writer.write("plot ");
097    
098                    int startColumn = xy ? 1 : 0;
099                    for (int c = startColumn; c < matrix.getColumnCount(); c++) {
100                            String x = matrix.getColumnLabel(c);
101                            x = x == null ? "column " + c : x;
102                            writer.write("'-' using 1:2 title '" + x + "' with linespoints");
103                            if (c < matrix.getColumnCount() - 1) {
104                                    writer.write(", ");
105                            } else {
106                                    writer.write(EOL);
107                            }
108                    }
109    
110                    if (xy) {
111                            for (int c = 1; c < matrix.getColumnCount(); c++) {
112                                    for (int r = 0; r < matrix.getRowCount(); r++) {
113                                            writer.write(matrix.getAsDouble(r, 0) + " " + matrix.getAsDouble(r, c) + EOL);
114                                    }
115                                    writer.write("e" + EOL); // data end
116                            }
117                    } else {
118                            for (int c = 0; c < matrix.getColumnCount(); c++) {
119                                    for (int r = 0; r < matrix.getRowCount(); r++) {
120                                            writer.write(r + " " + matrix.getAsDouble(r, c) + EOL);
121                                    }
122                                    writer.write("e" + EOL); // data end
123                            }
124                    }
125            }
126    }