Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/exports/ChartHelper.java @ 2311:b8df8d1476ba

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Compute differences between discharge table values and reference discharge table values in historical discharge curve calculation. flys-artifacts/trunk@3991 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 09 Feb 2012 10:57:35 +0000
parents 2b232871ba28
children 594885703687
rev   line source
2237
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
1 package de.intevation.flys.exports;
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
2
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
3 import org.jfree.data.Range;
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
4 import org.jfree.data.xy.XYDataset;
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
5
2241
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
6 import org.apache.log4j.Logger;
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
7
2237
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
8
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
9 /**
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
10 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
11 */
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
12 public class ChartHelper {
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
13
2241
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
14 private static final Logger logger = Logger.getLogger(ChartHelper.class);
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
15
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
16
2237
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
17 /**
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
18 * This method returns the ranges of the XYDataset <i>dataset</i> as array
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
19 * with [xrange, yrange].
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
20 *
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
21 * @param dataset The dataset which should be evaluated.
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
22 *
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
23 * @return an array with x and y ranges.
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
24 */
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
25 public static Range[] getRanges(XYDataset dataset) {
2241
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
26 int seriesCount = dataset != null ? dataset.getSeriesCount() : 0;
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
27
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
28 if (seriesCount == 0) {
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
29 logger.warn("Dataset is empty or has no Series set.");
2237
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
30 return null;
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
31 }
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
32
2241
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
33 boolean foundValue = false;
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
34
2237
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
35 double minX = Double.MAX_VALUE;
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
36 double maxX = -Double.MAX_VALUE;
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
37 double minY = Double.MAX_VALUE;
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
38 double maxY = -Double.MAX_VALUE;
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
39
2241
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
40 for (int i = 0, m = seriesCount; i < m; i++) {
2237
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
41 for (int j = 0, n = dataset.getItemCount(i); j < n; j++) {
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
42 double x = dataset.getXValue(i, j);
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
43 double y = dataset.getYValue(i, j);
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
44
2241
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
45 if (Double.isNaN(x) || Double.isNaN(y)) {
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
46 logger.warn("Item " + j + " in Series " + i + " is broken");
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
47 continue;
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
48 }
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
49
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
50 foundValue = true;
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
51
2237
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
52 if (x < minX) {
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
53 minX = x;
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
54 }
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
55
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
56 if (x > maxX) {
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
57 maxX = x;
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
58 }
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
59
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
60 if (y < minY) {
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
61 minY = y;
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
62 }
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
63
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
64 if (y > maxY) {
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
65 maxY = y;
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
66 }
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
67 }
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
68 }
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
69
2241
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
70 return foundValue
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
71 ? new Range[] { new Range(minX, maxX), new Range(minY, maxY) }
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
72 : null;
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
73 }
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
74
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
75
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
76 /**
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
77 * Expand range by percent.
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
78 *
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
79 * @param range The range to expand.
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
80 * @param percent The percentage to expand.
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
81 *
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
82 * @param an expanded range.
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
83 */
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
84 public static Range expandRange(Range range, double percent) {
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
85 if (range == null) {
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
86 return null;
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
87 }
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
88
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
89 double value = range.getLowerBound();
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
90 double expand = Math.abs(value / 100 * percent);
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
91
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
92 return expand != 0
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
93 ? new Range(value-expand, value+expand)
2b232871ba28 New helper functions in ChartHelper and improvements in EnhancedLineAndShapeRenderer.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2237
diff changeset
94 : new Range(-0.01 * percent, 0.01 * percent);
2237
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
95 }
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
96 }
60615235e951 Added a ChartHelper class that currently contains a method to compute the xy ranges of an XYDataset.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
97 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org