root / org.gvsig.toolbox / trunk / org.gvsig.toolbox / org.gvsig.toolbox.algorithm / src / main / java / es / unex / sextante / gridTools / aggregate / AggregateAlgorithm.java @ 59
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1 | 59 | nbrodin | package es.unex.sextante.gridTools.aggregate; |
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2 | |||
3 | import java.util.HashMap; |
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4 | import java.util.Iterator; |
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5 | import java.util.Set; |
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6 | |||
7 | import es.unex.sextante.additionalInfo.AdditionalInfoNumericalValue; |
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8 | import es.unex.sextante.core.AnalysisExtent; |
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9 | import es.unex.sextante.core.GeoAlgorithm; |
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10 | import es.unex.sextante.core.Sextante; |
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11 | import es.unex.sextante.dataObjects.IRasterLayer; |
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12 | import es.unex.sextante.exceptions.GeoAlgorithmExecutionException; |
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13 | import es.unex.sextante.exceptions.RepeatedParameterNameException; |
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14 | |||
15 | public class AggregateAlgorithm |
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16 | extends
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17 | GeoAlgorithm { |
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18 | |||
19 | public static final String GRID = "GRID"; |
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20 | public static final String METHOD = "METHOD"; |
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21 | public static final String SIZE = "SIZE"; |
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22 | public static final String RESULT = "RESULT"; |
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23 | |||
24 | public static final int SUM = 0; |
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25 | public static final int MAX = 1; |
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26 | public static final int MIN = 2; |
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27 | public static final int MODE = 3; |
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28 | |||
29 | |||
30 | @Override
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31 | public void defineCharacteristics() { |
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32 | |||
33 | final String[] sMethod = { Sextante.getText("Sum"), Sextante.getText("Maximum"), Sextante.getText("Minimum"), |
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34 | Sextante.getText("Moda") };
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35 | |||
36 | setName(Sextante.getText("Aggregate"));
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37 | setGroup(Sextante.getText("Basic_tools_for_raster_layers"));
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38 | setUserCanDefineAnalysisExtent(false);
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39 | |||
40 | try {
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41 | m_Parameters.addInputRasterLayer(GRID, Sextante.getText("Layer"), true); |
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42 | m_Parameters.addSelection(METHOD, Sextante.getText("M\u00e9todo"), sMethod);
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43 | m_Parameters.addNumericalValue(SIZE, Sextante.getText("Aggregation_factor"),
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44 | AdditionalInfoNumericalValue.NUMERICAL_VALUE_INTEGER, 2, 2, Integer.MAX_VALUE); |
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45 | addOutputRasterLayer(RESULT, Sextante.getText("Aggregated_layer"));
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46 | } |
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47 | catch (final RepeatedParameterNameException e) { |
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48 | Sextante.addErrorToLog(e); |
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49 | } |
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50 | |||
51 | } |
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52 | |||
53 | |||
54 | @Override
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55 | public boolean processAlgorithm() throws GeoAlgorithmExecutionException { |
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56 | |||
57 | int x, y;
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58 | int x2, y2;
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59 | int i, j;
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60 | int iNX, iNY;
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61 | int iSize;
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62 | int iMethod;
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63 | double dMin, dMax;
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64 | double dSum;
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65 | double dValue;
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66 | double dCellSize;
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67 | Integer count;
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68 | Double value;
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69 | final HashMap map = new HashMap(); |
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70 | AnalysisExtent resultExtent; |
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71 | IRasterLayer window; |
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72 | |||
73 | iSize = m_Parameters.getParameterValueAsInt(SIZE); |
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74 | iMethod = m_Parameters.getParameterValueAsInt(METHOD); |
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75 | window = m_Parameters.getParameterValueAsRasterLayer(GRID); |
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76 | |||
77 | window.setFullExtent(); |
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78 | final AnalysisExtent ge = window.getLayerGridExtent();
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79 | |||
80 | iNX = (int) Math.floor((window.getNX() / iSize)); |
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81 | iNY = (int) Math.floor((window.getNY() / iSize)); |
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82 | dCellSize = window.getLayerCellSize() * iSize; |
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83 | |||
84 | resultExtent = new AnalysisExtent();
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85 | resultExtent.setCellSize(dCellSize); |
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86 | resultExtent.setXRange(ge.getXMin(), ge.getXMin() + iNX * dCellSize, true);
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87 | resultExtent.setYRange(ge.getYMin(), ge.getYMin() + iNY * dCellSize, true);
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88 | |||
89 | |||
90 | final String sName = window.getName() + Sextante.getText("[aggregated]"); |
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91 | |||
92 | final IRasterLayer result = getNewRasterLayer(RESULT, sName, window.getDataType(), resultExtent);
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93 | |||
94 | for (y = 0, y2 = 0; (y2 < iNY) && setProgress(y, iNY); y += iSize, y2++) { |
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95 | for (x = 0, x2 = 0; x2 < iNX; x += iSize, x2++) { |
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96 | dMax = dMin = window.getCellValueAsDouble(x, y); |
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97 | dSum = 0;
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98 | for (i = 0; i < iSize; i++) { |
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99 | for (j = 0; j < iSize; j++) { |
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100 | dValue = window.getCellValueAsDouble(x + i, y + j); |
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101 | if (!window.isNoDataValue(dValue)) {
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102 | if (dValue > dMax) {
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103 | dMax = dValue; |
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104 | } |
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105 | if (dValue < dMin) {
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106 | dMin = dValue; |
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107 | } |
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108 | dSum += dValue; |
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109 | value = new Double(dValue); |
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110 | count = (Integer) map.get(new Double(dValue)); |
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111 | if (count != null) { |
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112 | count = new Integer(count.intValue() + 1); |
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113 | } |
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114 | else {
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115 | count = new Integer(1); |
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116 | } |
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117 | map.put(new Double(dValue), count); |
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118 | |||
119 | } |
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120 | } |
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121 | } |
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122 | |||
123 | |||
124 | int iCount;
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125 | int iMaxCount = 0; |
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126 | double dMode = window.getNoDataValue();
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127 | |||
128 | final Set set = map.keySet(); |
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129 | final Iterator iter = set.iterator(); |
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130 | |||
131 | while (iter.hasNext()) {
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132 | value = (Double) iter.next();
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133 | dValue = value.doubleValue(); |
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134 | count = (Integer) map.get(value);
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135 | if (count == null) { |
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136 | count = new Integer(1); |
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137 | } |
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138 | iCount = count.intValue(); |
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139 | if (iCount > iMaxCount) {
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140 | dMode = dValue; |
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141 | iMaxCount = iCount; |
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142 | } |
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143 | map.put(value, new Integer(iCount + 1)); |
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144 | } |
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145 | switch (iMethod) {
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146 | case SUM:
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147 | result.setCellValue(x2, y2, dSum); |
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148 | break;
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149 | case MIN:
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150 | result.setCellValue(x2, y2, dMin); |
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151 | break;
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152 | case MAX:
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153 | result.setCellValue(x2, y2, dMax); |
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154 | break;
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155 | case MODE:
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156 | result.setCellValue(x, y, dMode); |
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157 | default:
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158 | break;
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159 | } |
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160 | } |
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161 | } |
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162 | |||
163 | return !m_Task.isCanceled();
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164 | |||
165 | |||
166 | } |
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167 | |||
168 | } |