1 | /* |
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2 | * This program is free software; you can redistribute it and/or modify |
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3 | * it under the terms of the GNU General Public License as published by |
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4 | * the Free Software Foundation; either version 2 of the License, or |
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5 | * (at your option) any later version. |
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6 | * |
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7 | * This program is distributed in the hope that it will be useful, |
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8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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10 | * GNU General Public License for more details. |
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11 | * |
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12 | * You should have received a copy of the GNU General Public License |
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13 | * along with this program; if not, write to the Free Software |
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14 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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15 | */ |
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16 | |
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17 | /* |
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18 | * ClassPanel.java |
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19 | * Copyright (C) 2000 University of Waikato, Hamilton, New Zealand |
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20 | * |
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21 | */ |
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22 | |
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23 | package weka.gui.visualize; |
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24 | |
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25 | import weka.core.FastVector; |
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26 | import weka.core.Instances; |
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27 | import weka.core.Utils; |
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28 | |
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29 | import java.awt.BorderLayout; |
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30 | import java.awt.Color; |
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31 | import java.awt.Component; |
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32 | import java.awt.Font; |
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33 | import java.awt.FontMetrics; |
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34 | import java.awt.Graphics; |
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35 | import java.awt.event.ActionEvent; |
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36 | import java.awt.event.ActionListener; |
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37 | import java.awt.event.MouseAdapter; |
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38 | import java.awt.event.MouseEvent; |
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39 | |
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40 | import javax.swing.JColorChooser; |
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41 | import javax.swing.JLabel; |
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42 | import javax.swing.JPanel; |
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43 | |
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44 | /** |
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45 | * This panel displays coloured labels for nominal attributes and a spectrum |
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46 | * for numeric attributes. It can also be told to colour on the basis |
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47 | * of an array of doubles (this can be useful for displaying coloured labels |
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48 | * that correspond to a clusterers predictions). |
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49 | * |
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50 | * @author Mark Hall (mhall@cs.waikato.ac.nz) |
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51 | * @author Malcolm Ware (mfw4@cs.waikato.ac.nz) |
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52 | * @version $Revision: 5086 $ |
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53 | */ |
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54 | public class ClassPanel |
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55 | extends JPanel { |
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56 | |
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57 | /** for serialization */ |
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58 | private static final long serialVersionUID = -7969401840501661430L; |
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59 | |
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60 | /** True when the panel has been enabled (ie after |
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61 | setNumeric or setNominal has been called */ |
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62 | private boolean m_isEnabled = false; |
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63 | |
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64 | /** True if the colouring attribute is numeric */ |
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65 | private boolean m_isNumeric = false; |
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66 | |
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67 | /** The height of the spectrum for numeric class */ |
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68 | private final int m_spectrumHeight = 5; |
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69 | |
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70 | /** The maximum value for the colouring attribute */ |
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71 | private double m_maxC; |
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72 | |
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73 | /** The minimum value for the colouring attribute */ |
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74 | private double m_minC; |
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75 | |
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76 | /** The size of the ticks */ |
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77 | private final int m_tickSize = 5; |
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78 | |
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79 | /** Font metrics */ |
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80 | private FontMetrics m_labelMetrics = null; |
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81 | |
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82 | /** The font used in labeling */ |
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83 | private Font m_labelFont = null; |
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84 | |
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85 | /** The amount of space to leave either side of the legend */ |
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86 | private int m_HorizontalPad=0; |
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87 | |
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88 | /** The precision with which to display real values */ |
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89 | private int m_precisionC; |
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90 | |
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91 | /** Field width for numeric values */ |
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92 | private int m_fieldWidthC; |
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93 | |
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94 | /** The old width. */ |
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95 | private int m_oldWidth = -9000; |
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96 | |
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97 | /** Instances being plotted */ |
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98 | private Instances m_Instances=null; |
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99 | |
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100 | /** Index of the colouring attribute */ |
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101 | private int m_cIndex; |
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102 | |
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103 | /** the list of colours to use for colouring nominal attribute labels */ |
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104 | private FastVector m_colorList; |
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105 | |
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106 | /** An optional list of Components that use the colour list |
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107 | maintained by this class. If the user changes a colour |
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108 | using the colour chooser, then these components need to |
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109 | be repainted in order to display the change */ |
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110 | private FastVector m_Repainters = new FastVector(); |
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111 | |
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112 | /** An optional list of listeners who want to know when a colour |
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113 | changes. Listeners are notified via an ActionEvent */ |
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114 | private FastVector m_ColourChangeListeners = new FastVector(); |
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115 | |
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116 | /** default colours for colouring discrete class */ |
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117 | protected Color [] m_DefaultColors = {Color.blue, |
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118 | Color.red, |
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119 | Color.green, |
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120 | Color.cyan, |
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121 | Color.pink, |
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122 | new Color(255, 0, 255), |
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123 | Color.orange, |
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124 | new Color(255, 0, 0), |
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125 | new Color(0, 255, 0), |
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126 | Color.white}; |
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127 | |
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128 | /** |
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129 | * if set, it allows this panel to steer away from setting up |
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130 | * a color in the color list that is equal to the background color |
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131 | */ |
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132 | protected Color m_backgroundColor = null; |
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133 | |
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134 | /** Inner Inner class used to create labels for nominal attributes |
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135 | * so that there color can be changed. |
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136 | */ |
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137 | private class NomLabel |
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138 | extends JLabel { |
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139 | |
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140 | /** for serialization */ |
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141 | private static final long serialVersionUID = -4686613106474820655L; |
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142 | |
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143 | private int m_index = 0; |
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144 | |
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145 | /** |
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146 | * Creates a label with its name and class index value. |
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147 | * @param name The name of the nominal class value. |
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148 | * @param id The index value for that class value. |
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149 | */ |
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150 | public NomLabel(String name, int id) { |
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151 | super(name); |
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152 | m_index = id; |
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153 | |
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154 | this.addMouseListener(new MouseAdapter() { |
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155 | public void mouseClicked(MouseEvent e) { |
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156 | |
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157 | if ((e.getModifiers() & e.BUTTON1_MASK) == e.BUTTON1_MASK) { |
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158 | Color tmp = JColorChooser.showDialog |
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159 | (ClassPanel.this, "Select new Color", |
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160 | (Color)m_colorList.elementAt(m_index)); |
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161 | |
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162 | if (tmp != null) { |
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163 | m_colorList.setElementAt(tmp, m_index); |
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164 | m_oldWidth = -9000; |
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165 | ClassPanel.this.repaint(); |
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166 | if (m_Repainters.size() > 0) { |
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167 | for (int i=0;i<m_Repainters.size();i++) { |
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168 | ((Component)(m_Repainters.elementAt(i))).repaint(); |
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169 | } |
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170 | } |
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171 | |
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172 | if (m_ColourChangeListeners.size() > 0) { |
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173 | for (int i = 0; i < m_ColourChangeListeners.size(); i++) { |
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174 | ((ActionListener)(m_ColourChangeListeners.elementAt(i))). |
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175 | actionPerformed(new ActionEvent(this, 0, "")); |
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176 | } |
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177 | } |
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178 | } |
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179 | } |
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180 | } |
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181 | }); |
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182 | } |
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183 | } |
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184 | |
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185 | public ClassPanel() { |
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186 | this(null); |
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187 | } |
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188 | |
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189 | public ClassPanel(Color background) { |
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190 | m_backgroundColor = background; |
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191 | |
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192 | /** Set up some default colours */ |
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193 | m_colorList = new FastVector(10); |
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194 | for (int noa = m_colorList.size(); noa < 10; noa++) { |
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195 | Color pc = m_DefaultColors[noa % 10]; |
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196 | int ija = noa / 10; |
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197 | ija *= 2; |
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198 | for (int j=0;j<ija;j++) { |
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199 | pc = pc.darker(); |
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200 | } |
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201 | |
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202 | m_colorList.addElement(pc); |
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203 | } |
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204 | } |
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205 | |
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206 | /** |
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207 | * Adds a component that will need to be repainted if the user |
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208 | * changes the colour of a label. |
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209 | * @param c the component to be repainted |
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210 | */ |
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211 | public void addRepaintNotify(Component c) { |
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212 | m_Repainters.addElement(c); |
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213 | } |
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214 | |
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215 | /** |
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216 | * Add an action listener that will be notified if the user changes the |
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217 | * colour of a label |
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218 | * |
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219 | * @param a an <code>ActionListener</code> value |
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220 | */ |
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221 | public void addActionListener(ActionListener a) { |
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222 | m_ColourChangeListeners.addElement(a); |
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223 | } |
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224 | |
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225 | /** |
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226 | * Set up fonts and font metrics |
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227 | * @param gx the graphics context |
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228 | */ |
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229 | private void setFonts(Graphics gx) { |
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230 | if (m_labelMetrics == null) { |
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231 | m_labelFont = new Font("Monospaced", Font.PLAIN, 12); |
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232 | m_labelMetrics = gx.getFontMetrics(m_labelFont); |
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233 | int hf = m_labelMetrics.getAscent(); |
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234 | if (this.getHeight() < (3*hf)) { |
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235 | m_labelFont = new Font("Monospaced",Font.PLAIN,11); |
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236 | m_labelMetrics = gx.getFontMetrics(m_labelFont); |
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237 | } |
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238 | } |
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239 | gx.setFont(m_labelFont); |
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240 | } |
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241 | |
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242 | /** |
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243 | * Enables the panel |
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244 | * @param e true to enable the panel |
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245 | */ |
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246 | public void setOn(boolean e) { |
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247 | m_isEnabled = e; |
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248 | } |
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249 | |
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250 | /** |
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251 | * Set the instances. |
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252 | * @param insts the instances |
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253 | */ |
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254 | public void setInstances(Instances insts) { |
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255 | m_Instances = insts; |
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256 | } |
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257 | |
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258 | /** |
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259 | * Set the index of the attribute to display coloured labels for |
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260 | * @param cIndex the index of the attribute to display coloured labels for |
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261 | */ |
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262 | public void setCindex(int cIndex) { |
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263 | if (m_Instances.numAttributes() > 0) { |
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264 | m_cIndex = cIndex; |
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265 | if (m_Instances.attribute(m_cIndex).isNumeric()) { |
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266 | setNumeric(); |
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267 | } else { |
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268 | if (m_Instances.attribute(m_cIndex).numValues() > m_colorList.size()) { |
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269 | extendColourMap(); |
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270 | } |
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271 | setNominal(); |
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272 | } |
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273 | } |
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274 | } |
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275 | |
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276 | /** |
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277 | * Extends the list of colours if a new attribute with more values than |
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278 | * the previous one is chosen |
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279 | */ |
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280 | private void extendColourMap() { |
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281 | if (m_Instances.attribute(m_cIndex).isNominal()) { |
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282 | for (int i = m_colorList.size(); |
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283 | i < m_Instances.attribute(m_cIndex).numValues(); |
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284 | i++) { |
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285 | Color pc = m_DefaultColors[i % 10]; |
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286 | int ija = i / 10; |
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287 | ija *= 2; |
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288 | for (int j=0;j<ija;j++) { |
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289 | pc = pc.brighter(); |
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290 | } |
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291 | if (m_backgroundColor != null) { |
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292 | pc = Plot2D.checkAgainstBackground(pc, m_backgroundColor); |
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293 | } |
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294 | |
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295 | m_colorList.addElement(pc); |
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296 | } |
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297 | } |
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298 | } |
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299 | |
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300 | protected void setDefaultColourList(Color[] list) { |
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301 | m_DefaultColors = list; |
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302 | } |
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303 | |
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304 | /** |
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305 | * Set a list of colours to use for colouring labels |
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306 | * @param cols a list containing java.awt.Colors |
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307 | */ |
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308 | public void setColours(FastVector cols) { |
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309 | m_colorList = cols; |
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310 | } |
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311 | |
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312 | /** |
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313 | * Sets the legend to be for a nominal variable |
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314 | */ |
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315 | protected void setNominal() { |
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316 | m_isNumeric = false; |
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317 | m_HorizontalPad = 0; |
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318 | setOn(true); |
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319 | m_oldWidth = -9000; |
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320 | |
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321 | this.repaint(); |
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322 | } |
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323 | |
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324 | /** |
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325 | * Sets the legend to be for a numeric variable |
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326 | */ |
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327 | protected void setNumeric() { |
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328 | m_isNumeric = true; |
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329 | /* m_maxC = mxC; |
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330 | m_minC = mnC; */ |
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331 | |
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332 | double min=Double.POSITIVE_INFINITY; |
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333 | double max=Double.NEGATIVE_INFINITY; |
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334 | double value; |
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335 | |
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336 | for (int i=0;i<m_Instances.numInstances();i++) { |
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337 | if (!m_Instances.instance(i).isMissing(m_cIndex)) { |
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338 | value = m_Instances.instance(i).value(m_cIndex); |
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339 | if (value < min) { |
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340 | min = value; |
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341 | } |
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342 | if (value > max) { |
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343 | max = value; |
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344 | } |
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345 | } |
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346 | } |
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347 | |
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348 | // handle case where all values are missing |
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349 | if (min == Double.POSITIVE_INFINITY) min = max = 0.0; |
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350 | |
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351 | m_minC = min; m_maxC = max; |
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352 | |
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353 | int whole = (int)Math.abs(m_maxC); |
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354 | double decimal = Math.abs(m_maxC) - whole; |
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355 | int nondecimal; |
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356 | nondecimal = (whole > 0) |
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357 | ? (int)(Math.log(whole) / Math.log(10)) |
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358 | : 1; |
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359 | |
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360 | m_precisionC = (decimal > 0) |
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361 | ? (int)Math.abs(((Math.log(Math.abs(m_maxC)) / |
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362 | Math.log(10))))+2 |
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363 | : 1; |
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364 | if (m_precisionC > VisualizeUtils.MAX_PRECISION) { |
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365 | m_precisionC = 1; |
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366 | } |
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367 | |
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368 | String maxStringC = Utils.doubleToString(m_maxC, |
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369 | nondecimal+1+m_precisionC |
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370 | ,m_precisionC); |
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371 | if (m_labelMetrics != null) { |
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372 | m_HorizontalPad = m_labelMetrics.stringWidth(maxStringC); |
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373 | } |
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374 | |
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375 | whole = (int)Math.abs(m_minC); |
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376 | decimal = Math.abs(m_minC) - whole; |
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377 | nondecimal = (whole > 0) |
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378 | ? (int)(Math.log(whole) / Math.log(10)) |
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379 | : 1; |
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380 | |
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381 | m_precisionC = (decimal > 0) |
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382 | ? (int)Math.abs(((Math.log(Math.abs(m_minC)) / |
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383 | Math.log(10))))+2 |
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384 | : 1; |
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385 | if (m_precisionC > VisualizeUtils.MAX_PRECISION) { |
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386 | m_precisionC = 1; |
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387 | } |
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388 | |
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389 | maxStringC = Utils.doubleToString(m_minC, |
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390 | nondecimal+1+m_precisionC |
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391 | ,m_precisionC); |
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392 | if (m_labelMetrics != null) { |
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393 | if (m_labelMetrics.stringWidth(maxStringC) > m_HorizontalPad) { |
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394 | m_HorizontalPad = m_labelMetrics.stringWidth(maxStringC); |
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395 | } |
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396 | } |
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397 | |
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398 | setOn(true); |
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399 | this.repaint(); |
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400 | } |
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401 | |
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402 | /** |
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403 | * Renders the legend for a nominal colouring attribute |
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404 | * @param gx the graphics context |
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405 | */ |
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406 | protected void paintNominal(Graphics gx) { |
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407 | setFonts(gx); |
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408 | |
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409 | |
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410 | |
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411 | int numClasses; |
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412 | |
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413 | numClasses = m_Instances.attribute(m_cIndex).numValues(); |
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414 | |
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415 | int maxLabelLen = 0; |
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416 | int idx=0; |
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417 | int legendHeight; |
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418 | int w = this.getWidth(); |
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419 | int hf = m_labelMetrics.getAscent(); |
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420 | |
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421 | |
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422 | for (int i=0;i<numClasses;i++) { |
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423 | if (m_Instances.attribute(m_cIndex).value(i).length() > |
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424 | maxLabelLen) { |
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425 | maxLabelLen = m_Instances. |
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426 | attribute(m_cIndex).value(i).length(); |
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427 | idx = i; |
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428 | } |
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429 | } |
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430 | |
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431 | maxLabelLen = m_labelMetrics.stringWidth(m_Instances. |
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432 | attribute(m_cIndex).value(idx)); |
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433 | |
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434 | |
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435 | if (((w-(2*m_HorizontalPad))/(maxLabelLen+5)) >= numClasses) { |
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436 | legendHeight = 1; |
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437 | } else { |
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438 | legendHeight = 2; |
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439 | } |
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440 | |
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441 | int x = m_HorizontalPad; |
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442 | int y = 1 + hf; |
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443 | |
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444 | // do the first row |
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445 | int ci, mp; |
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446 | Color pc; |
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447 | int numToDo = ((legendHeight==1) ? numClasses : (numClasses/2)); |
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448 | for (int i=0;i<numToDo;i++) { |
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449 | |
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450 | gx.setColor((Color)m_colorList.elementAt(i)); |
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451 | // can we fit the full label or will each need to be trimmed? |
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452 | if ((numToDo * maxLabelLen) > (w-(m_HorizontalPad*2))) { |
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453 | String val; |
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454 | val = m_Instances.attribute(m_cIndex).value(i); |
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455 | |
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456 | int sw = m_labelMetrics.stringWidth(val); |
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457 | int rm=0; |
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458 | // truncate string if necessary |
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459 | if (sw > ((w-(m_HorizontalPad*2)) / (numToDo))) { |
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460 | int incr = (sw / val.length()); |
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461 | rm = (sw - ((w-(m_HorizontalPad*2)) / numToDo)) / incr; |
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462 | if (rm <= 0) { |
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463 | rm = 0; |
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464 | } |
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465 | if (rm >= val.length()) { |
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466 | rm = val.length() - 1; |
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467 | } |
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468 | val = val.substring(0,val.length()-rm); |
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469 | sw = m_labelMetrics.stringWidth(val); |
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470 | } |
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471 | NomLabel jj = new NomLabel(val, i); |
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472 | jj.setFont(gx.getFont()); |
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473 | |
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474 | jj.setSize(m_labelMetrics.stringWidth(jj.getText()), |
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475 | m_labelMetrics.getAscent() + 4); |
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476 | this.add(jj); |
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477 | jj.setLocation(x, y); |
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478 | jj.setForeground((Color)m_colorList. |
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479 | elementAt(i % m_colorList.size())); |
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480 | |
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481 | x += sw + 2; |
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482 | } else { |
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483 | |
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484 | NomLabel jj; |
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485 | jj = new NomLabel(m_Instances.attribute(m_cIndex).value(i), i); |
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486 | |
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487 | jj.setFont(gx.getFont()); |
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488 | |
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489 | jj.setSize(m_labelMetrics.stringWidth(jj.getText()), |
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490 | m_labelMetrics.getAscent() + 4); |
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491 | this.add(jj); |
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492 | jj.setLocation(x, y); |
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493 | jj.setForeground((Color)m_colorList. |
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494 | elementAt(i % m_colorList.size())); |
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495 | |
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496 | |
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497 | |
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498 | x += ((w-(m_HorizontalPad*2)) / numToDo); |
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499 | } |
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500 | } |
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501 | |
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502 | x = m_HorizontalPad; |
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503 | y = 1+ hf + 5 +hf; |
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504 | for (int i=numToDo;i<numClasses;i++) { |
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505 | |
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506 | gx.setColor((Color)m_colorList.elementAt(i)); |
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507 | if (((numClasses-numToDo+1) * maxLabelLen) > |
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508 | (w - (m_HorizontalPad*2))) { |
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509 | String val; |
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510 | val = m_Instances.attribute(m_cIndex).value(i); |
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511 | |
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512 | int sw = m_labelMetrics.stringWidth(val); |
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513 | int rm=0; |
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514 | // truncate string if necessary |
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515 | if (sw > ((w-(m_HorizontalPad*2)) / (numClasses-numToDo+1))) { |
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516 | int incr = (sw / val.length()); |
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517 | rm = (sw - ((w-(m_HorizontalPad*2)) / (numClasses-numToDo))) |
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518 | / incr; |
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519 | if (rm <= 0) { |
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520 | rm = 0; |
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521 | } |
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522 | if (rm >= val.length()) { |
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523 | rm = val.length() - 1; |
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524 | } |
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525 | val = val.substring(0,val.length()-rm); |
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526 | sw = m_labelMetrics.stringWidth(val); |
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527 | } |
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528 | //this is the clipped string |
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529 | NomLabel jj = new NomLabel(val, i); |
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530 | jj.setFont(gx.getFont()); |
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531 | |
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532 | jj.setSize(m_labelMetrics.stringWidth(jj.getText()), |
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533 | m_labelMetrics.getAscent() + 4); |
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534 | |
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535 | this.add(jj); |
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536 | jj.setLocation(x, y); |
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537 | jj.setForeground((Color)m_colorList. |
---|
538 | elementAt(i % m_colorList.size())); |
---|
539 | |
---|
540 | x += sw +2; |
---|
541 | } else { |
---|
542 | //this is the full string |
---|
543 | NomLabel jj; |
---|
544 | jj = new NomLabel(m_Instances.attribute(m_cIndex).value(i), i); |
---|
545 | |
---|
546 | jj.setFont(gx.getFont()); |
---|
547 | |
---|
548 | jj.setSize(m_labelMetrics.stringWidth(jj.getText()), |
---|
549 | m_labelMetrics.getAscent() + 4); |
---|
550 | this.add(jj); |
---|
551 | jj.setLocation(x, y); |
---|
552 | jj.setForeground((Color)m_colorList. |
---|
553 | elementAt(i % m_colorList.size())); |
---|
554 | |
---|
555 | x += ((w - (m_HorizontalPad*2)) / (numClasses-numToDo)); |
---|
556 | } |
---|
557 | } |
---|
558 | |
---|
559 | } |
---|
560 | |
---|
561 | /** |
---|
562 | * Renders the legend for a numeric colouring attribute |
---|
563 | * @param gx the graphics context |
---|
564 | */ |
---|
565 | protected void paintNumeric(Graphics gx) { |
---|
566 | |
---|
567 | setFonts(gx); |
---|
568 | if (m_HorizontalPad == 0) { |
---|
569 | setCindex(m_cIndex); |
---|
570 | } |
---|
571 | |
---|
572 | int w = this.getWidth(); |
---|
573 | double rs = 15; |
---|
574 | double incr = 240.0 / (double)(w-(m_HorizontalPad*2)); |
---|
575 | int hf = m_labelMetrics.getAscent(); |
---|
576 | |
---|
577 | for (int i=m_HorizontalPad;i< |
---|
578 | (w-m_HorizontalPad);i++) { |
---|
579 | Color c = new Color((int)rs,150,(int)(255-rs)); |
---|
580 | gx.setColor(c); |
---|
581 | gx.drawLine(i,0, |
---|
582 | i,0+m_spectrumHeight); |
---|
583 | rs += incr; |
---|
584 | } |
---|
585 | |
---|
586 | int whole = (int)Math.abs(m_maxC); |
---|
587 | double decimal = Math.abs(m_maxC) - whole; |
---|
588 | int nondecimal; |
---|
589 | nondecimal = (whole > 0) |
---|
590 | ? (int)(Math.log(whole) / Math.log(10)) |
---|
591 | : 1; |
---|
592 | |
---|
593 | m_precisionC = (decimal > 0) |
---|
594 | ? (int)Math.abs(((Math.log(Math.abs(m_maxC)) / |
---|
595 | Math.log(10))))+2 |
---|
596 | : 1; |
---|
597 | if (m_precisionC > VisualizeUtils.MAX_PRECISION) { |
---|
598 | m_precisionC = 1; |
---|
599 | } |
---|
600 | |
---|
601 | String maxStringC = Utils.doubleToString(m_maxC, |
---|
602 | nondecimal+1+m_precisionC |
---|
603 | ,m_precisionC); |
---|
604 | |
---|
605 | |
---|
606 | int mswc = m_labelMetrics.stringWidth(maxStringC); |
---|
607 | int tmsc = mswc; |
---|
608 | if (w > (2 * tmsc)) { |
---|
609 | gx.setColor(Color.black); |
---|
610 | gx.drawLine(m_HorizontalPad, |
---|
611 | (m_spectrumHeight+5), |
---|
612 | w-m_HorizontalPad, |
---|
613 | (m_spectrumHeight+5)); |
---|
614 | |
---|
615 | gx.drawLine(w-m_HorizontalPad, |
---|
616 | (m_spectrumHeight+5), |
---|
617 | w-m_HorizontalPad, |
---|
618 | (m_spectrumHeight+5+m_tickSize)); |
---|
619 | |
---|
620 | gx.drawString(maxStringC, |
---|
621 | (w-m_HorizontalPad)-(mswc/2), |
---|
622 | (m_spectrumHeight+5+m_tickSize+hf)); |
---|
623 | |
---|
624 | gx.drawLine(m_HorizontalPad, |
---|
625 | (m_spectrumHeight+5), |
---|
626 | m_HorizontalPad, |
---|
627 | (m_spectrumHeight+5+m_tickSize)); |
---|
628 | |
---|
629 | whole = (int)Math.abs(m_minC); |
---|
630 | decimal = Math.abs(m_minC) - whole; |
---|
631 | nondecimal = (whole > 0) |
---|
632 | ? (int)(Math.log(whole) / Math.log(10)) |
---|
633 | : 1; |
---|
634 | |
---|
635 | m_precisionC = (decimal > 0) |
---|
636 | ? (int)Math.abs(((Math.log(Math.abs(m_minC)) / |
---|
637 | Math.log(10))))+2 |
---|
638 | : 1; |
---|
639 | |
---|
640 | if (m_precisionC > VisualizeUtils.MAX_PRECISION) { |
---|
641 | m_precisionC = 1; |
---|
642 | } |
---|
643 | |
---|
644 | maxStringC = Utils.doubleToString(m_minC, |
---|
645 | nondecimal+1+m_precisionC |
---|
646 | ,m_precisionC); |
---|
647 | |
---|
648 | mswc = m_labelMetrics.stringWidth(maxStringC); |
---|
649 | gx.drawString(maxStringC, |
---|
650 | m_HorizontalPad-(mswc/2), |
---|
651 | (m_spectrumHeight+5+m_tickSize+hf)); |
---|
652 | |
---|
653 | // draw the middle value if there is space |
---|
654 | if (w > (3 * tmsc)) { |
---|
655 | double mid = m_minC+((m_maxC-m_minC)/2.0); |
---|
656 | gx.drawLine(m_HorizontalPad+((w-(2*m_HorizontalPad))/2), |
---|
657 | (m_spectrumHeight+5), |
---|
658 | m_HorizontalPad+((w-(2*m_HorizontalPad))/2), |
---|
659 | (m_spectrumHeight+5+m_tickSize)); |
---|
660 | |
---|
661 | whole = (int)Math.abs(mid); |
---|
662 | decimal = Math.abs(mid) - whole; |
---|
663 | nondecimal = (whole > 0) |
---|
664 | ? (int)(Math.log(whole) / Math.log(10)) |
---|
665 | : 1; |
---|
666 | |
---|
667 | m_precisionC = (decimal > 0) |
---|
668 | ? (int)Math.abs(((Math.log(Math.abs(mid)) / |
---|
669 | Math.log(10))))+2 |
---|
670 | : 1; |
---|
671 | if (m_precisionC > VisualizeUtils.MAX_PRECISION) { |
---|
672 | m_precisionC = 1; |
---|
673 | } |
---|
674 | |
---|
675 | maxStringC = Utils.doubleToString(mid, |
---|
676 | nondecimal+1+m_precisionC |
---|
677 | ,m_precisionC); |
---|
678 | |
---|
679 | mswc = m_labelMetrics.stringWidth(maxStringC); |
---|
680 | gx.drawString(maxStringC, |
---|
681 | m_HorizontalPad+((w-(2*m_HorizontalPad))/2)-(mswc/2), |
---|
682 | (m_spectrumHeight+5+m_tickSize+hf)); |
---|
683 | } |
---|
684 | } |
---|
685 | } |
---|
686 | |
---|
687 | /** |
---|
688 | * Renders this component |
---|
689 | * @param gx the graphics context |
---|
690 | */ |
---|
691 | public void paintComponent(Graphics gx) { |
---|
692 | super.paintComponent(gx); |
---|
693 | if (m_isEnabled) { |
---|
694 | if (m_isNumeric) { |
---|
695 | m_oldWidth = -9000; //done so that if change back to nom, it will |
---|
696 | //work |
---|
697 | this.removeAll(); |
---|
698 | paintNumeric(gx); |
---|
699 | } else { |
---|
700 | if (m_Instances != null && |
---|
701 | m_Instances.numInstances() > 0 && |
---|
702 | m_Instances.numAttributes() > 0) { |
---|
703 | if (m_oldWidth != this.getWidth()) { |
---|
704 | this.removeAll(); |
---|
705 | m_oldWidth = this.getWidth(); |
---|
706 | paintNominal(gx); |
---|
707 | } |
---|
708 | } |
---|
709 | } |
---|
710 | } |
---|
711 | } |
---|
712 | |
---|
713 | /** |
---|
714 | * Main method for testing this class. |
---|
715 | * @param args first argument must specify an arff file. Second can |
---|
716 | * specify an optional index to colour labels on |
---|
717 | */ |
---|
718 | public static void main(String [] args) { |
---|
719 | try { |
---|
720 | if (args.length < 1) { |
---|
721 | System.err.println("Usage : weka.gui.visualize.ClassPanel <dataset> " |
---|
722 | +"[class col]"); |
---|
723 | System.exit(1); |
---|
724 | } |
---|
725 | final javax.swing.JFrame jf = |
---|
726 | new javax.swing.JFrame("Weka Explorer: Class"); |
---|
727 | jf.setSize(500,100); |
---|
728 | jf.getContentPane().setLayout(new BorderLayout()); |
---|
729 | final ClassPanel p2 = new ClassPanel(); |
---|
730 | jf.getContentPane().add(p2, BorderLayout.CENTER); |
---|
731 | jf.addWindowListener(new java.awt.event.WindowAdapter() { |
---|
732 | public void windowClosing(java.awt.event.WindowEvent e) { |
---|
733 | jf.dispose(); |
---|
734 | System.exit(0); |
---|
735 | } |
---|
736 | }); |
---|
737 | |
---|
738 | if (args.length >= 1) { |
---|
739 | System.err.println("Loading instances from " + args[0]); |
---|
740 | java.io.Reader r = new java.io.BufferedReader( |
---|
741 | new java.io.FileReader(args[0])); |
---|
742 | Instances i = new Instances(r); |
---|
743 | i.setClassIndex(i.numAttributes()-1); |
---|
744 | p2.setInstances(i); |
---|
745 | } |
---|
746 | if (args.length > 1) { |
---|
747 | p2.setCindex((Integer.parseInt(args[1]))-1); |
---|
748 | } else { |
---|
749 | p2.setCindex(0); |
---|
750 | } |
---|
751 | jf.setVisible(true); |
---|
752 | } catch (Exception ex) { |
---|
753 | ex.printStackTrace(); |
---|
754 | System.err.println(ex.getMessage()); |
---|
755 | } |
---|
756 | } |
---|
757 | } |
---|