Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/artifacts/FLYSArtifact.java @ 362:d79a51fc4f1d
Added necessary methods to start the computation of waterlevel data.
flys-artifacts/trunk@1770 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
|---|---|
| date | Fri, 29 Apr 2011 07:46:27 +0000 |
| parents | d97982627596 |
| children | 3e66a5705c39 |
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| 361:3e3ec9613883 | 362:d79a51fc4f1d |
|---|---|
| 58 /** The constant string that shows that an operation was successful.*/ | 58 /** The constant string that shows that an operation was successful.*/ |
| 59 public static final String OPERATION_SUCCESSFUL = "SUCCESS"; | 59 public static final String OPERATION_SUCCESSFUL = "SUCCESS"; |
| 60 | 60 |
| 61 /** The constant string that shows that an operation failed.*/ | 61 /** The constant string that shows that an operation failed.*/ |
| 62 public static final String OPERATION_FAILED = "FAILURE"; | 62 public static final String OPERATION_FAILED = "FAILURE"; |
| 63 | |
| 64 /** The default number of steps between the start end end of a selected Q | |
| 65 * range.*/ | |
| 66 public static final int DEFAULT_Q_STEPS = 30; | |
| 63 | 67 |
| 64 | 68 |
| 65 /** The identifier of the current state. */ | 69 /** The identifier of the current state. */ |
| 66 protected String currentStateId; | 70 protected String currentStateId; |
| 67 | 71 |
| 474 return new double[] { from, to }; | 478 return new double[] { from, to }; |
| 475 } | 479 } |
| 476 | 480 |
| 477 | 481 |
| 478 /** | 482 /** |
| 483 * Returns the selected Kms. | |
| 484 * | |
| 485 * @return the selected Kms. | |
| 486 */ | |
| 487 public double[] getKms() { | |
| 488 StateData dStep = getData("ld_step"); | |
| 489 | |
| 490 if (dStep == null) { | |
| 491 logger.warn("No step width given. Cannot compute Kms."); | |
| 492 return null; | |
| 493 } | |
| 494 | |
| 495 double step = Double.parseDouble((String) dStep.getValue()); | |
| 496 double[] distance = getDistance(); | |
| 497 double lower = distance[0]; | |
| 498 | |
| 499 // transform step from 'm' into 'km' | |
| 500 step = step / 1000; | |
| 501 | |
| 502 return getExplodedValues(distance[0], distance[1], step); | |
| 503 } | |
| 504 | |
| 505 | |
| 506 /** | |
| 479 * Returns the gauge based on the current distance and river. | 507 * Returns the gauge based on the current distance and river. |
| 480 * | 508 * |
| 481 * @return the gauge. | 509 * @return the gauge. |
| 482 */ | 510 */ |
| 483 public Gauge getGauge() { | 511 public Gauge getGauge() { |
| 495 String name = gauge != null ? gauge.getName() : "'n/a"; | 523 String name = gauge != null ? gauge.getName() : "'n/a"; |
| 496 logger.debug("Found gauge: " + name); | 524 logger.debug("Found gauge: " + name); |
| 497 | 525 |
| 498 return gauge; | 526 return gauge; |
| 499 } | 527 } |
| 528 | |
| 529 | |
| 530 /** | |
| 531 * This method returns the Q values. | |
| 532 * | |
| 533 * @return the selected Q values or null, if no Q values are selected. | |
| 534 */ | |
| 535 public double[] getQs() { | |
| 536 StateData dFrom = getData("wq_from"); | |
| 537 StateData dTo = getData("wq_to"); | |
| 538 | |
| 539 if (dFrom == null || dTo == null) { | |
| 540 logger.warn("Missing start or end value for Q range."); | |
| 541 return null; | |
| 542 } | |
| 543 | |
| 544 double from = Double.parseDouble((String) dFrom.getValue()); | |
| 545 double to = Double.parseDouble((String) dTo.getValue()); | |
| 546 | |
| 547 StateData dStep = getData("wq_step"); | |
| 548 | |
| 549 if (dStep == null) { | |
| 550 logger.warn("No step width given. Cannot compute Qs."); | |
| 551 return null; | |
| 552 } | |
| 553 | |
| 554 double step = Double.parseDouble((String) dStep.getValue()); | |
| 555 | |
| 556 // if no width is given, the DEFAULT_Q_STEPS is used to compute the step | |
| 557 // width. Maybe, we should round the value to a number of digits. | |
| 558 if (step == 0d) { | |
| 559 double diff = to - from; | |
| 560 step = diff / DEFAULT_Q_STEPS; | |
| 561 } | |
| 562 | |
| 563 return getExplodedValues(from, to, step); | |
| 564 } | |
| 565 | |
| 566 | |
| 567 /** | |
| 568 * Returns an array of double values. The values contained in this array | |
| 569 * begin with the value <i>from</i> and end with the value <i>to</i>. The | |
| 570 * number of values in the result array depends on the <i>step</i> width. | |
| 571 * | |
| 572 * @param from The lower value. | |
| 573 * @param to The upper value. | |
| 574 * @param step The step width between two values in the result array. | |
| 575 * | |
| 576 * @return an array of double values. | |
| 577 */ | |
| 578 public double[] getExplodedValues(double from, double to, double step) { | |
| 579 double lower = from; | |
| 580 | |
| 581 double diff = to - from; | |
| 582 double tmp = (diff * 100 / step); | |
| 583 int tmpN = (int) (tmp / 100); | |
| 584 int num = tmpN + 2; | |
| 585 | |
| 586 double[] values = new double[num]; | |
| 587 int idx = 0; | |
| 588 | |
| 589 do { | |
| 590 values[idx++] = lower; | |
| 591 lower += step; | |
| 592 } | |
| 593 while (lower < to); | |
| 594 | |
| 595 values[idx] = to; | |
| 596 | |
| 597 return values; | |
| 598 } | |
| 500 } | 599 } |
| 501 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : | 600 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |