Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/WstValueTable.java @ 2557:adb8641f5b5d
WstValueTable: Added method to find the w extent for a given km.
flys-artifacts/trunk@4076 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
|---|---|
| date | Fri, 17 Feb 2012 11:29:14 +0000 |
| parents | 750cdcccb39c |
| children | 33e4481933e2 |
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| 2556:efb2038783f9 | 2557:adb8641f5b5d |
|---|---|
| 494 qs.add(q); | 494 qs.add(q); |
| 495 } | 495 } |
| 496 | 496 |
| 497 return qs.toNativeArray(); | 497 return qs.toNativeArray(); |
| 498 } | 498 } |
| 499 | |
| 500 public double [] getMinMaxW() { | |
| 501 double minW = Double.MAX_VALUE; | |
| 502 double maxW = -Double.MAX_VALUE; | |
| 503 for (int i = 0; i < ws.length; ++i) { | |
| 504 double w = ws[i]; | |
| 505 if (w < minW) minW = w; | |
| 506 if (w > maxW) maxW = w; | |
| 507 } | |
| 508 return new double [] { minW, maxW }; | |
| 509 } | |
| 510 | |
| 511 public double [] getMinMaxW(Row other, double km) { | |
| 512 double [] m1 = this .getMinMaxW(); | |
| 513 double [] m2 = other.getMinMaxW(); | |
| 514 double factor = Linear.factor(km, this.km, other.km); | |
| 515 return new double [] { | |
| 516 Linear.weight(factor, m1[0], m2[0]), | |
| 517 Linear.weight(factor, m1[1], m2[1]) | |
| 518 }; | |
| 519 } | |
| 499 } // class Row | 520 } // class Row |
| 500 | 521 |
| 501 /** Rows in table. */ | 522 /** Rows in table. */ |
| 502 protected List<Row> rows; | 523 protected List<Row> rows; |
| 503 | 524 |
| 582 } | 603 } |
| 583 } | 604 } |
| 584 | 605 |
| 585 return ws; | 606 return ws; |
| 586 } | 607 } |
| 608 | |
| 609 public double [] getMinMaxW(double km) { | |
| 610 int rowIndex = Collections.binarySearch(rows, new Row(km)); | |
| 611 | |
| 612 if (rowIndex >= 0) { | |
| 613 return rows.get(rowIndex).getMinMaxW(); | |
| 614 } | |
| 615 | |
| 616 rowIndex = -rowIndex -1; | |
| 617 | |
| 618 if (rowIndex < 1 || rowIndex >= rows.size()) { | |
| 619 // do not extrapolate | |
| 620 return null; | |
| 621 } | |
| 622 | |
| 623 Row r1 = rows.get(rowIndex-1); | |
| 624 Row r2 = rows.get(rowIndex); | |
| 625 | |
| 626 return r1.getMinMaxW(r2, km); | |
| 627 } | |
| 628 | |
| 587 | 629 |
| 588 /** | 630 /** |
| 589 * Interpolate W and Q values at a given km. | 631 * Interpolate W and Q values at a given km. |
| 590 */ | 632 */ |
| 591 public double [][] interpolateWQ(double km) { | 633 public double [][] interpolateWQ(double km) { |