Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/exports/ATWriter.java @ 6142:a8adf19fbde3
Use FixMilliseconds instead of dates for time periods
This works around a JfreeChart limitation that limits dates to
valus > 1900
Fix remembered by Sascha Teichmann
author | Andre Heinecke <aheinecke@intevation.de> |
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date | Fri, 31 May 2013 16:38:57 +0200 |
parents | af13ceeba52a |
children | 715e010d40de |
rev | line source |
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde |
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2 * Software engineering by Intevation GmbH |
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3 * |
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4 * This file is Free Software under the GNU AGPL (>=v3) |
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the |
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6 * documentation coming with Dive4Elements River for details. |
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7 */ |
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8 |
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9 package org.dive4elements.river.exports; |
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10 |
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11 import java.io.IOException; |
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12 import java.io.Writer; |
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13 import java.io.PrintWriter; |
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14 import java.math.BigDecimal; |
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15 |
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16 import java.text.DateFormat; |
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17 import java.util.Date; |
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18 import java.util.Locale; |
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19 |
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20 import org.dive4elements.artifacts.CallMeta; |
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21 |
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22 import org.dive4elements.river.artifacts.model.WQ; |
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23 import org.dive4elements.river.artifacts.resources.Resources; |
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24 |
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25 import org.apache.commons.math.analysis.UnivariateRealFunction; |
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26 |
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27 import org.apache.commons.math.analysis.interpolation.SplineInterpolator; |
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28 import org.apache.commons.math.analysis.interpolation.LinearInterpolator; |
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29 |
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30 import org.apache.commons.math.analysis.polynomials.PolynomialFunction; |
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31 |
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32 import org.apache.commons.math.FunctionEvaluationException; |
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33 |
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34 import org.apache.log4j.Logger; |
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35 |
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36 /** Write AT files. */ |
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37 public class ATWriter |
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38 { |
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39 private static Logger logger = Logger.getLogger(ATWriter.class); |
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40 |
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41 public static final int COLUMNS = 10; |
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42 |
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43 public static final String I18N_AT_HEADER = |
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44 "export.discharge.curve.at.header"; |
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45 |
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46 public static final String I18N_AT_GAUGE_HEADER = |
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47 "export.discharge.curve.at.gauge.header"; |
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48 |
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49 public static final String EMPTY = " "; |
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50 |
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51 protected double minW; |
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52 protected double maxW; |
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53 protected double minQ; |
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54 protected double maxQ; |
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55 |
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56 protected UnivariateRealFunction qFunc; |
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57 |
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58 public ATWriter() { |
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59 } |
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60 |
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61 public ATWriter(WQ wq) throws IllegalArgumentException { |
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62 |
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63 int [] bounds = wq.longestIncreasingWRangeIndices(); |
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64 |
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65 if (logger.isDebugEnabled()) { |
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66 logger.debug("exporting w between indices " + |
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67 bounds[0] + " and " + bounds[1] + " (" + |
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68 wq.getW(bounds[0]) + ", " + wq.getW(bounds[1])); |
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69 } |
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70 |
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71 if (bounds[1]-bounds[0] < 1) { // Only first w can be written out. |
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72 minW = maxW = wq.getW(bounds[0]); |
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73 minQ = maxQ = wq.getQ(bounds[0]); |
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74 // constant function |
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75 qFunc = new PolynomialFunction(new double [] { minQ }); |
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76 return; |
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77 } |
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78 |
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79 double [] ws = new double[bounds[1]-bounds[0]]; |
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80 double [] qs = new double[ws.length]; |
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81 |
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82 for (int i = 0; i < ws.length; ++i) { |
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83 int idx = bounds[0]+i; |
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84 ws[i] = wq.getW(idx); |
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85 qs[i] = wq.getQ(idx); |
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86 } |
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87 |
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88 qFunc = ws.length < 3 |
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89 ? new LinearInterpolator().interpolate(ws, qs) |
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90 : new SplineInterpolator().interpolate(ws, qs); |
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91 |
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92 minW = wq.getW(bounds[0]); |
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93 maxW = wq.getW(bounds[1]); |
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94 minQ = wq.getQ(bounds[0]); |
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95 maxQ = wq.getQ(bounds[1]); |
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96 } |
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97 |
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98 public double getQ(double w) { |
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99 |
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100 try { |
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101 return qFunc.value(w); |
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102 } |
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103 catch (FunctionEvaluationException aode) { |
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104 // should not happen |
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105 logger.warn("spline interpolation failed", aode); |
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106 return w <= minW ? minQ : maxQ; |
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107 } |
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108 } |
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109 |
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110 public static void printQ(PrintWriter out, double q) { |
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111 String format; |
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112 if (q < 1d) format = " % 8.3f"; |
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113 else if (q < 10d) format = " % 8.2f"; |
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114 else if (q < 100d) format = " % 8.1f"; |
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115 else { |
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116 format = " % 8.0f"; |
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117 if (q > 1000d) q = Math.rint(q/10d)*10d; |
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118 } |
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119 out.printf(Locale.US, format, q); |
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120 } |
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121 |
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122 |
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123 protected static void printGaugeHeader( |
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124 PrintWriter out, |
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125 CallMeta callMeta, |
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126 String river, |
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127 double km, |
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128 String gName, |
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129 BigDecimal datum, |
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130 Date date |
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131 ) { |
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132 DateFormat f = DateFormat.getDateInstance(); |
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133 out.print(Resources.getMsg( |
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134 callMeta, |
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135 I18N_AT_GAUGE_HEADER, |
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136 I18N_AT_GAUGE_HEADER, |
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137 new Object[] { river, gName, f.format(date), datum } )); |
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138 out.print("\r\n"); |
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139 } |
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140 |
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141 protected static void printHeader( |
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142 PrintWriter out, |
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143 CallMeta callMeta, |
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144 String river, |
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145 double km |
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146 ) { |
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147 out.print(Resources.getMsg( |
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148 callMeta, |
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149 I18N_AT_HEADER, |
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150 I18N_AT_HEADER, |
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151 new Object[] { river, km } )); |
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152 out.print("\r\n"); |
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153 } |
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154 |
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155 public void write( |
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156 Writer writer, |
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157 CallMeta meta, |
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158 String river, |
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159 double km, |
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160 String gName, |
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161 BigDecimal datum, |
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162 Date date, |
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163 double scale) |
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164 throws IOException |
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165 { |
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166 PrintWriter out = new PrintWriter(writer); |
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167 |
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168 // A header is required, because the desktop version of FLYS will skip |
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169 // the first row. |
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170 if (gName != null) { |
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171 printGaugeHeader(out, meta, river, km, gName, datum, date); |
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172 } |
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173 else { |
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174 printHeader(out, meta, river, km); |
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175 } |
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176 |
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177 double rest = (minW * 100.0) % 10.0; |
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178 |
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179 double startW = Math.rint((minW - rest*0.01)*10.0)*0.1; |
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180 |
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181 if (logger.isDebugEnabled()) { |
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182 logger.debug("startW: " + startW); |
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183 logger.debug("rest: " + rest); |
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184 } |
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185 |
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186 int col = 0; |
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187 for (double w = startW; w <= maxW; w += 0.01) { |
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188 if (col == 0) { |
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189 out.printf(Locale.US, "%8d", (int)Math.round(w * scale)); |
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190 } |
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191 |
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192 if (w < minW) { |
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193 out.print(EMPTY); |
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194 } |
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195 else { |
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196 printQ(out, getQ(w)); |
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197 } |
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198 |
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199 if (++col >= COLUMNS) { |
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200 out.print("\r\n"); |
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201 col = 0; |
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202 } |
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203 } |
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204 |
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205 if (col > 0) { |
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206 out.print("\r\n"); |
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207 } |
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208 |
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209 out.flush(); |
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210 } |
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211 } |
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212 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |