Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/chart/DefaultHistogram.java @ 646:c8749d83d9b6

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added a configuration section for mapserver relevant stuff. Moved source to write meta files out to an own helper class named MetaWriter. gnv-artifacts/trunk@733 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 04 Mar 2010 16:23:24 +0000
parents d08b9ba148c5
children 79401c871da4
rev   line source
617
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
1 package de.intevation.gnv.chart;
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
2
629
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
3 import java.text.NumberFormat;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
4 import java.text.ParseException;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
5 import java.util.Locale;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
6 import java.util.Map;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
7
617
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
8 import org.apache.log4j.Logger;
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
9
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
10 import org.jfree.chart.ChartTheme;
623
65f09139e9b3 Fixed file handle leak when writing meta data.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 617
diff changeset
11
617
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
12 import org.jfree.chart.plot.XYPlot;
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
13
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
14 import org.jfree.data.statistics.HistogramDataset;
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
15
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
16 /**
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
17 * @author Ingo Weinzierl (ingo.weinzierl@intevation.de)
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
18 */
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
19 public class DefaultHistogram
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
20 extends AbstractHistogram
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
21 {
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
22 // TODO take a better default value
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
23 public static final int DEFAULT_BINS = 15;
629
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
24 public static final int MAXIMAL_BINS = 20;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
25 public static final String REQUEST_KEY_BIN_COUNT = "bincount";
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
26 public static final String REQUEST_KEY_BIN_WIDTH = "binwidth";
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
27 public static final String REQUEST_KEY_CHART_WIDTH = "width";
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
28 public static final String REQUEST_KEY_LOCALE = "locale";
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
29 public static final String REQUEST_KEY_BIN_CHOICE = "bintype";
617
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
30
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
31 private static Logger logger = Logger.getLogger(DefaultHistogram.class);
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
32
629
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
33 protected Map requestParameter;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
34
617
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
35
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
36 public DefaultHistogram(
629
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
37 ChartLabels labels, Object[] data, ChartTheme theme, Map requestParameter
617
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
38 ) {
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
39 super(labels, data, theme);
629
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
40 this.requestParameter = requestParameter;
617
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
41 }
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
42
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
43
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
44 protected void applyDatasets() {
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
45 XYPlot plot = (XYPlot) chart.getPlot();
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
46
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
47 // prepare data and create add them to histogram dataset
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
48 String name = (String) data[0];
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
49 double[] values = toDouble((Double[]) data[1]);
629
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
50 int bins = getBinCount(values);
617
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
51
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
52 HistogramDataset dataset = new HistogramDataset();
629
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
53 dataset.addSeries(name, values, bins);
617
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
54
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
55 plot.setDataset(0, dataset);
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
56 }
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
57
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
58
629
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
59 protected double[] getMinMax(double[] values) {
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
60 double[] minmax = new double[2];
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
61 minmax[0] = Double.MAX_VALUE;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
62 minmax[1] = Double.MIN_VALUE;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
63
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
64 int length = values.length;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
65 for (int i = 0; i < length; i++) {
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
66 minmax[0] = values[i] < minmax[0] ? values[i] : minmax[0];
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
67 minmax[1] = values[i] > minmax[1] ? values[i] : minmax[1];
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
68 }
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
69
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
70 return minmax;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
71 }
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
72
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
73
617
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
74 protected double[] toDouble(Double[] array) {
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
75 int length = array.length;
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
76 double[] values = new double[length];
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
77
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
78 for(int i = 0; i < length; i++) {
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
79 values[i] = array[i].doubleValue();
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
80 }
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
81
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
82 return values;
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
83 }
629
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
84
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
85
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
86 protected int getBinCount(double[] values) {
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
87 String param = (String) requestParameter.get(REQUEST_KEY_BIN_CHOICE);
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
88
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
89 if (param != null && param.equalsIgnoreCase(REQUEST_KEY_BIN_WIDTH)) {
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
90 return getBinCountByWidth(values);
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
91 }
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
92 else {
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
93 return getBinCountByNumber();
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
94 }
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
95 }
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
96
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
97
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
98 protected int getBinCountByNumber() {
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
99 int bins = -1;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
100 String param = (String) requestParameter.get(REQUEST_KEY_BIN_COUNT);
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
101
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
102 try {
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
103 bins = Integer.parseInt(param);
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
104 bins = bins <= 0 ? DEFAULT_BINS : bins;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
105 bins = bins > MAXIMAL_BINS ? MAXIMAL_BINS : bins;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
106
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
107 return bins;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
108 }
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
109 catch (NumberFormatException nfe) {
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
110 logger.warn("Invalid number of bins for histogram chart: " + param);
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
111 logger.warn("Return default bins: " + DEFAULT_BINS);
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
112
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
113 return DEFAULT_BINS;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
114 }
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
115 }
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
116
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
117
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
118 protected int getBinCountByWidth(double[] values) {
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
119 int bins = -1;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
120 String param = (String) requestParameter.get(REQUEST_KEY_BIN_WIDTH);
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
121 Locale locale = (Locale) requestParameter.get(REQUEST_KEY_LOCALE);
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
122 NumberFormat format = NumberFormat.getInstance(locale);
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
123
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
124 try {
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
125 double[] minmax = getMinMax(values);
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
126 double totalWidth = minmax[1] - minmax[0];
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
127 Number number = format.parse(param);
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
128 double binWidth = -1d;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
129
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
130 if (number instanceof Double) {
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
131 binWidth = ((Double) number).doubleValue();
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
132 }
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
133 else if (number instanceof Long) {
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
134 binWidth = ((Long) number).doubleValue();
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
135 }
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
136 else if (number instanceof Integer) {
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
137 binWidth = ((Integer) number).doubleValue();
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
138 }
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
139 else {
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
140 logger.warn("Invalid bin width for histogram chart: " + param);
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
141 logger.warn("Return default bins: " + DEFAULT_BINS);
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
142
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
143 return DEFAULT_BINS;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
144 }
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
145
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
146 double tmpBins = totalWidth / binWidth;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
147
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
148 bins = (int) Math.round(tmpBins);
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
149 bins = bins <= 0 ? DEFAULT_BINS : bins;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
150 bins = bins > MAXIMAL_BINS ? MAXIMAL_BINS : bins;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
151
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
152 return bins;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
153 }
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
154 catch (ParseException pe) {
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
155 logger.warn("Invalid bin width for histogram chart: " + param);
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
156 logger.warn("Return default bins: " + DEFAULT_BINS);
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
157
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
158 return DEFAULT_BINS;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
159 }
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
160 catch (NumberFormatException nfe) {
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
161 logger.warn("Invalid bin width for histogram chart: " + param);
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
162 logger.warn("Return default bins: " + DEFAULT_BINS);
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
163
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
164 return DEFAULT_BINS;
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
165 }
d08b9ba148c5 Implemented logic to adjust number of bins corresponding to user input.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 623
diff changeset
166 }
617
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
167 }
3d13fa281a7e Added new ouput mode: histogram.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
168 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org