Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/jfree/AxisDataset.java @ 9801:1d7a72a50183 3.2.x tip

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Assume Compose V2, consistently
author Tom Gottfried <tom@intevation.de>
date Thu, 23 Nov 2023 10:14:13 +0100
parents 0a5239a1e46e
children
rev   line source
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1 /* Copyright (C) 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.jfree;
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10
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11 import java.util.List;
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12 import java.util.ArrayList;
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13
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14 import org.jfree.data.Range;
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15 import org.jfree.data.RangeInfo;
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16 import org.jfree.data.xy.XYDataset;
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17 import org.jfree.data.xy.XYSeries;
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18 import org.jfree.data.xy.XYSeriesCollection;
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19 import org.jfree.data.time.TimeSeriesCollection;
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20
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21 import org.apache.logging.log4j.Logger;
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22 import org.apache.logging.log4j.LogManager;
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23
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24 /**
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25 * Axis datasets.
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26 */
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27 public class AxisDataset
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28 {
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29 private static Logger log = LogManager.getLogger(AxisDataset.class);
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30
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31 /** Symbolic integer, but also coding the priority (0 goes first). */
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32 protected int axisSymbol;
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33
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34 /** List of assigned datasets (in order). */
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35 protected List<XYDataset> datasets;
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36
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37 /** Range to use to include all given datasets. */
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38 protected Range range;
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39
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40 /** Index of axis in plot. */
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41 protected int plotAxisIndex;
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42
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43 protected boolean rangeDirty;
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44
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45 /** Create AxisDataset. */
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46 public AxisDataset(int symb) {
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47 axisSymbol = symb;
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48 datasets = new ArrayList<XYDataset>();
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49 }
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50
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51 /** Add a dataset to internal list for this axis. */
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52 public void addDataset(XYDataset dataset) {
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53 datasets.add(dataset);
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54 rangeDirty = true;
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55 }
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56
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57 /** Add a dataset. */
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58 public void addDataset(XYSeries series) {
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59 addDataset(new XYSeriesCollection(series));
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60 }
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61
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62 public void setRange(Range val) {
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63 range = val;
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64 }
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65
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66 /** Get Range for the range axis of this dataset. */
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67 public Range getRange() {
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68 if (range != null && !rangeDirty) {
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69 return range;
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70 }
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71 /* Calculate the min / max of all series */
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72 for (XYDataset dataset: datasets) {
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73 Range newRange = null;
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74 if (dataset instanceof StyledAreaSeriesCollection) {
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75 /* We do not include areas in the range calculation because
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76 * they are used with very large / small values to draw areas
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77 * with axis boundaries */
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78 continue;
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79 } else if (dataset instanceof RangeInfo) {
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80 /* The usual case for most series */
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81 newRange = ((RangeInfo) dataset).getRangeBounds(false);
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82 } else if (dataset instanceof TimeSeriesCollection) {
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83 /* Lalala <3 Jfreechart's class hirarchy */
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84 newRange = ((TimeSeriesCollection)dataset)
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85 .getRangeBounds(false);
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86 }
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87
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88 /* Now we only expand as we also only add new data */
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89 if (range == null) {
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90 range = newRange;
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91 } else {
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92 range = Range.combine(range, newRange);
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93 }
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94 }
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95 rangeDirty = false;
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96 return range;
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97 }
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98
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99 /** Get Array of Datasets. */
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100 public XYDataset[] getDatasets() {
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101 return datasets.toArray(new XYDataset[datasets.size()]);
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102 }
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103
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104 /** True if to be rendered as area. */
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105 public boolean isArea(XYDataset series) {
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106 return (series instanceof StyledAreaSeriesCollection);
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107 }
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108
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109 /** True if no datasets given. */
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110 public boolean isEmpty() {
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111 return datasets.isEmpty();
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112 }
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113
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114 /** Set the 'real' axis index that this axis is mapped to. */
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115 public void setPlotAxisIndex(int axisIndex) {
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116 plotAxisIndex = axisIndex;
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117 }
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118
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119 /** Get the 'real' axis index that this axis is mapped to. */
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120 public int getPlotAxisIndex() {
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121 return plotAxisIndex;
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122 }
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123
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124 /** Add a Dataset that describes an area. */
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125 public void addArea(StyledAreaSeriesCollection series) {
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126 addDataset(series);
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127 }
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128
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129 }
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