Mercurial > dive4elements > gnv-client
comparison gnv-artifacts/src/main/java/de/intevation/gnv/histogram/HistogramHelper.java @ 1081:846b2b70b2e0
Implemented histogram creation for vectorial timeseries.
gnv-artifacts/trunk@1183 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
|---|---|
| date | Wed, 09 Jun 2010 09:51:05 +0000 |
| parents | 01e26528bb39 |
| children | f953c9a559d8 |
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| 1080:01e26528bb39 | 1081:846b2b70b2e0 |
|---|---|
| 1 package de.intevation.gnv.histogram; | 1 package de.intevation.gnv.histogram; |
| 2 | |
| 3 import de.intevation.artifacts.CallContext; | |
| 4 | |
| 5 import de.intevation.gnv.artifacts.ressource.RessourceFactory; | |
| 6 | |
| 7 import de.intevation.gnv.chart.ChartLabels; | |
| 2 | 8 |
| 3 import de.intevation.gnv.geobackend.base.Result; | 9 import de.intevation.gnv.geobackend.base.Result; |
| 4 import de.intevation.gnv.geobackend.base.ResultDescriptor; | 10 import de.intevation.gnv.geobackend.base.ResultDescriptor; |
| 5 | 11 |
| 6 import de.intevation.gnv.state.describedata.KeyValueDescibeData; | 12 import de.intevation.gnv.state.describedata.KeyValueDescibeData; |
| 7 | 13 |
| 8 import java.util.ArrayList; | 14 import java.util.ArrayList; |
| 9 import java.util.Collection; | 15 import java.util.Collection; |
| 10 import java.util.Iterator; | 16 import java.util.Iterator; |
| 11 import java.util.List; | 17 import java.util.List; |
| 18 import java.util.Locale; | |
| 12 | 19 |
| 13 import org.apache.log4j.Logger; | 20 import org.apache.log4j.Logger; |
| 14 | 21 |
| 15 /** | 22 /** |
| 16 * This class supports some helper methods for histogram charts. | 23 * This class supports some helper methods for histogram charts. |
| 234 (String) data[0], | 241 (String) data[0], |
| 235 "", | 242 "", |
| 236 "", | 243 "", |
| 237 fac.getRessource(locale, "histogram.axis.range.title", "")); | 244 fac.getRessource(locale, "histogram.axis.range.title", "")); |
| 238 } | 245 } |
| 246 | |
| 247 | |
| 248 public static Object[][] prepareVectorialHistogramData(Collection input) { | |
| 249 List names = new ArrayList<String>(); | |
| 250 List data = new ArrayList<Double[]>(); | |
| 251 | |
| 252 if (logger.isDebugEnabled()) { | |
| 253 logger.debug("######### prepare vectorial histogram data #######"); | |
| 254 logger.debug("Input data size: " + input.size()); | |
| 255 } | |
| 256 | |
| 257 if (input == null) { | |
| 258 return new Object[0][0]; | |
| 259 } | |
| 260 | |
| 261 int sIdx = -1; | |
| 262 int yIdx = -1; | |
| 263 | |
| 264 String series = null; | |
| 265 | |
| 266 try { | |
| 267 Iterator iter = input.iterator(); | |
| 268 | |
| 269 if (iter.hasNext()) { | |
| 270 Result row = (Result) iter.next(); | |
| 271 Result previousRow = row; | |
| 272 | |
| 273 if (sIdx == -1 || yIdx == -1) { | |
| 274 ResultDescriptor rd = row.getResultDescriptor(); | |
| 275 sIdx = rd.getColumnIndex("SERIES"); | |
| 276 yIdx = rd.getColumnIndex("YORDINATE"); | |
| 277 | |
| 278 if (sIdx == -1 || yIdx == -1) { | |
| 279 return new Object[0][0]; | |
| 280 } | |
| 281 } | |
| 282 | |
| 283 List values = new ArrayList<Double>(); | |
| 284 while (iter.hasNext()) { | |
| 285 row = (Result) iter.next(); | |
| 286 | |
| 287 // found new series | |
| 288 if (series != null && !series.equals(row.getString(sIdx))) { | |
| 289 | |
| 290 // add values and parameter name | |
| 291 data.add((Double[]) | |
| 292 values.toArray(new Double[values.size()])); | |
| 293 names.add(series); | |
| 294 | |
| 295 if (logger.isDebugEnabled()) { | |
| 296 logger.debug(" --- series name: " + series); | |
| 297 logger.debug(" --- series items: " + values.size()); | |
| 298 } | |
| 299 | |
| 300 values.clear(); | |
| 301 } | |
| 302 | |
| 303 Double value = row.getDouble(yIdx); | |
| 304 if (value != null) | |
| 305 values.add(value); | |
| 306 | |
| 307 series = row.getString(sIdx); | |
| 308 } | |
| 309 | |
| 310 if (logger.isDebugEnabled()) { | |
| 311 logger.debug(" --- series name: " + series); | |
| 312 logger.debug(" --- series items: " + values.size()); | |
| 313 } | |
| 314 | |
| 315 data.add((Double[]) values.toArray(new Double[values.size()])); | |
| 316 names.add(series); | |
| 317 } | |
| 318 } | |
| 319 catch (Exception e) { | |
| 320 logger.error(e.getMessage(), e); | |
| 321 } | |
| 322 | |
| 323 int count = data.size(); | |
| 324 logger.debug(" === Found total: " + count); | |
| 325 Object[][] obj = new Object[count][2]; | |
| 326 for (int i = 0; i < count; i++) { | |
| 327 obj[i][0] = names.get(i); | |
| 328 obj[i][1] = (Double[]) data.get(i); | |
| 329 } | |
| 330 | |
| 331 return obj; | |
| 332 } | |
| 239 } | 333 } |
| 240 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : | 334 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 : |