wamblee.org Git - utils/blob - gps/src/org/wamblee/gpx/GpxPlotter.java

   1 /*
   2  * Copyright 2006 the original author or authors.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.wamblee.gpx;
  18
  19 import java.awt.Color;
  20 import java.awt.Image;
  21 import java.io.File;
  22 import java.io.FileInputStream;
  23 import java.io.FileOutputStream;
  24 import java.io.IOException;
  25 import java.util.ArrayList;
  26 import java.util.List;
  27
  28 import org.jfree.chart.ChartFactory;
  29 import org.jfree.chart.ChartFrame;
  30 import org.jfree.chart.ChartUtilities;
  31 import org.jfree.chart.JFreeChart;
  32 import org.jfree.chart.axis.NumberAxis;
  33 import org.jfree.chart.plot.PlotOrientation;
  34 import org.jfree.chart.plot.XYPlot;
  35 import org.jfree.chart.renderer.xy.XYItemRenderer;
  36 import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
  37 import org.jfree.data.xy.XYSeries;
  38 import org.jfree.data.xy.XYSeriesCollection;
  39 import org.wamblee.general.Pair;
  40 import org.wamblee.gps.geometry.Plane;
  41 import org.wamblee.gps.geometry.Point;
  42 import org.wamblee.gps.geometry.ReferenceCoordinateSystem;
  43 import org.wamblee.gps.track.Track;
  44 import org.wamblee.utils.JpegUtils;
  45
  46 /**
  47  * Parses a GPX file and prints out a data file with each trackpoints distance from the start of the
  48  * track and its elevation, separated 0by a space.
  49  */
  50 public class GpxPlotter {
  51
  52     public static void main(String[] aArgs) throws Exception {
  53         File file = new File(aArgs[0]);
  54         GpxParser parser = new GpxParser();
  55         Track track = parser.parse(new FileInputStream(file));
  56
  57         List<Pair<Double,Double>> elevationProfile = computeElevationProfile(track);
  58         printTrack(elevationProfile);
  59         computeTotalClimb(elevationProfile);
  60         plotElevationProfile(elevationProfile);
  61         List<Pair<Double,Double>> trackXy = computeTrackXY(track);
  62         List<Pair<Double,Double>> trackLatLon = computeTrackLatLon(track);
  63         plotTrack(trackLatLon);
  64     }
  65
  66     private static List<Pair<Double, Double>> computeElevationProfile(Track aTrack) {
  67         List<Pair<Double,Double>> results = new ArrayList<Pair<Double,Double>>();
  68         double distance = 0.0;
  69         for (int i = 0; i < aTrack.size(); i++) {
  70             Point point = aTrack.getPoint(i);
  71             results.add(new Pair<Double,Double>(distance, point.getCoordinates().getX3()));
  72             if ( i+1 < aTrack.size()) {
  73                 Point nextPoint = aTrack.getPoint(i+1);
  74                 distance += ReferenceCoordinateSystem.distance(point, nextPoint);
  75             }
  76         }
  77         return results;
  78     }
  79
  80     private static List<Pair<Double, Double>> computeTrackXY(Track aTrack) {
  81         Point reference = aTrack.getPoint(0);
  82         Plane plane = new Plane(reference, reference); // assume the earth is spherical.
  83         List<Pair<Double,Double>> results = new ArrayList<Pair<Double,Double>>();
  84         for (int i = 0; i < aTrack.size(); i++) {
  85             Point point = aTrack.getPoint(i);
  86             Pair<Double,Double> projection = plane.normalizedProjection(point);
  87             results.add(projection);
  88             System.out.println(point);
  89         }
  90         return results;
  91     }
  92
  93     private static List<Pair<Double, Double>> computeTrackLatLon(Track aTrack) {
  94         List<Pair<Double,Double>> results = new ArrayList<Pair<Double,Double>>();
  95         for (int i = 0; i < aTrack.size(); i++) {
  96             Point point = aTrack.getPoint(i);
  97             results.add(new Pair<Double,Double>(point.getCoordinates().getX1(), point.getCoordinates().getX2()));
  98         }
  99         return results;
 100     }
 101
 102
 103
 104     private static void printTrack(List<Pair<Double,Double>> aHeightProfile) {
 105        for (Pair<Double,Double> point: aHeightProfile) {
 106            System.out.println(point.getFirst() + " " + point.getSecond());
 107        }
 108     }
 109
 110     private static void computeTotalClimb(List<Pair<Double,Double>> aHeightProfile) {
 111         double result = 0.0;
 112
 113         double lastHeight = aHeightProfile.get(0).getSecond();
 114         for ( int i = 1; i < aHeightProfile.size(); i++) {
 115             double height = aHeightProfile.get(i).getSecond();
 116             if ( height > lastHeight) {
 117                 result += (height-lastHeight);
 118             }
 119             lastHeight = height;
 120         }
 121         System.out.println("Total climb: " + result);
 122     }
 123
 124     private static void plotElevationProfile(List<Pair<Double,Double>> aHeightProfile) throws IOException {
 125         XYSeriesCollection dataset = createDataset(aHeightProfile, "height");
 126         JFreeChart chart = ChartFactory.createXYLineChart(
 127                 "Height Profile",
 128                 "Distance(m)",
 129                 "Height(m)",
 130                 dataset,
 131                 PlotOrientation.VERTICAL,
 132                 true,
 133                 true,
 134                 false);
 135         ChartUtilities.writeChartAsPNG(new FileOutputStream("height.png"), chart, 600, 300);
 136         ChartFrame frame = new ChartFrame("test", chart);
 137         frame.pack();
 138         frame.setVisible(true);
 139     }
 140
 141     private static void plotTrack(List<Pair<Double,Double>> aPoints) throws IOException, InterruptedException {
 142         XYSeriesCollection dataset = createDataset(aPoints, "track");
 143         JFreeChart chart = createLineChart(dataset);
 144
 145         Pair<Pair<Double,Double>,Pair<Double,Double>> bounds = getBounds(aPoints);
 146
 147         chart.getXYPlot().getDomainAxis().setLowerBound(bounds.getFirst().getFirst());
 148         chart.getXYPlot().getDomainAxis().setUpperBound(bounds.getFirst().getSecond());
 149
 150         chart.getXYPlot().getRangeAxis().setLowerBound(bounds.getSecond().getFirst());
 151         chart.getXYPlot().getRangeAxis().setUpperBound(bounds.getSecond().getSecond());
 152
 153         Image background = JpegUtils.loadJpegImage(new FileInputStream("/home/erik/vakantie.jpg"));
 154         chart.getPlot().setBackgroundImage(background);
 155
 156         XYLineAndShapeRenderer renderer = (XYLineAndShapeRenderer)chart.getXYPlot().getRenderer();
 157         renderer.setShapesVisible(true);
 158         renderer.setShapesFilled(true);
 159         renderer.setPaint(Color.BLACK);
 160
 161         ChartUtilities.writeChartAsPNG(new FileOutputStream("test.png"), chart, 1280, 800);
 162         ChartFrame frame = new ChartFrame("test", chart);
 163         frame.pack();
 164         frame.setVisible(true);
 165     }
 166
 167     /**
 168      * @param dataset
 169      * @return
 170      */
 171     private static JFreeChart createLineChart(XYSeriesCollection dataset) {
 172         NumberAxis xAxis = new NumberAxis("S->N");
 173         xAxis.setAutoRangeIncludesZero(false);
 174
 175         NumberAxis yAxis = new NumberAxis("W->E");
 176         yAxis.setAutoRangeIncludesZero(false);
 177
 178         XYItemRenderer renderer = new XYLineAndShapeRenderer(true, false);
 179         XYPlot plot = new ZoomableBackgroundXYPlot(dataset, xAxis, yAxis, renderer);
 180         plot.setOrientation(PlotOrientation.HORIZONTAL);
 181
 182         JFreeChart chart = new JFreeChart(
 183             "Track", JFreeChart.DEFAULT_TITLE_FONT, plot, true
 184         );
 185
 186         return chart;
 187         /*
 188         JFreeChart chart = ChartFactory.createXYLineChart(
 189                 "Track",
 190                 "S->N",
 191                 "W->E",
 192                 dataset,
 193                 PlotOrientation.HORIZONTAL,
 194                 true,
 195                 true,
 196                 false);
 197         return chart;
 198         */
 199     }
 200
 201     /**
 202      * @param aHeightProfile
 203      * @return
 204      */
 205     private static XYSeriesCollection createDataset(List<Pair<Double, Double>> aHeightProfile, String aName) {
 206         XYSeries series = new XYSeries(aName, false);
 207         for (Pair<Double,Double> point: aHeightProfile) {
 208             series.add(point.getFirst(), point.getSecond());
 209         }
 210         XYSeriesCollection dataset = new XYSeriesCollection(series);
 211         return dataset;
 212     }
 213
 214     private static Pair<Pair<Double,Double>,Pair<Double,Double>> getBounds(List<Pair<Double,Double>> aList) {
 215         Pair<Double,Double> first = aList.get(0);
 216         double minx= first.getFirst();
 217         double maxx = minx;
 218         double miny = first.getSecond();
 219         double maxy = miny;
 220
 221         for (int i = 0; i < aList.size(); i++) {
 222             Pair<Double,Double> value = aList.get(i);
 223             minx = Math.min(minx, value.getFirst());
 224             maxx = Math.max(maxx, value.getFirst());
 225             miny = Math.min(miny, value.getSecond());
 226             maxy = Math.max(maxy, value.getSecond());
 227         }
 228         if ( maxx == minx ) {
 229             maxx += 1.0; // to avoid problems.
 230         }
 231         if ( maxy == miny ) {
 232             maxy += 1.0; // to avoid problems.
 233         }
 234         final double paddingFactor = 0.3; // allow some space around min and max
 235         return new Pair<Pair<Double,Double>,Pair<Double,Double>>(
 236                 new Pair<Double,Double>( minx - paddingFactor*(maxx-minx),
 237                                          maxx + paddingFactor*(maxx-minx)),
 238                 new Pair<Double,Double>( miny - paddingFactor*(maxy-miny),
 239                                          maxy + paddingFactor*(maxy-miny))
 240                 );
 241     }
 242 }
 243