Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/utils/GeometryUtils.java @ 2762:33aa37e6d98f

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Reproject geometries before exporting them as shapefiles to filesystem. flys-artifacts/trunk@4498 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 24 May 2012 07:58:47 +0000
parents cbeeaaad1056
children f062b5a90e26
rev   line source
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eeebf8514c7f The boundary (extent) for the river axis is determined based on its geometry - this extent is written into the wms facet.
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parents:
diff changeset
1 package de.intevation.flys.utils;
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2
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3 import java.io.IOException;
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4 import java.io.File;
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5 import java.io.Serializable;
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6 import java.net.MalformedURLException;
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7 import java.util.ArrayList;
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8 import java.util.HashMap;
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9 import java.util.List;
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10 import java.util.Map;
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11
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12 import org.apache.log4j.Logger;
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13
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14 import com.vividsolutions.jts.geom.Coordinate;
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15 import com.vividsolutions.jts.geom.Envelope;
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16 import com.vividsolutions.jts.geom.Geometry;
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17
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18 import org.opengis.feature.simple.SimpleFeature;
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19 import org.opengis.feature.simple.SimpleFeatureType;
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20 import org.opengis.referencing.FactoryException;
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21 import org.opengis.referencing.NoSuchAuthorityCodeException;
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005c2964f9af Use the correct SRID while reading GeoJSON barriers and writing line/polygon shapefiles.
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22 import org.opengis.referencing.crs.CoordinateReferenceSystem;
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23 import org.opengis.referencing.operation.MathTransform;
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24 import org.opengis.referencing.operation.TransformException;
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25
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26 import org.geotools.data.DataStoreFactorySpi;
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27 import org.geotools.data.DefaultTransaction;
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28 import org.geotools.data.FeatureWriter;
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29 import org.geotools.data.Transaction;
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30 import org.geotools.data.shapefile.ShapefileDataStore;
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31 import org.geotools.data.shapefile.ShapefileDataStoreFactory;
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32 import org.geotools.data.simple.SimpleFeatureIterator;
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33 import org.geotools.feature.FeatureIterator;
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34 import org.geotools.feature.FeatureCollection;
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35 import org.geotools.feature.simple.SimpleFeatureTypeBuilder;
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36 import org.geotools.geojson.feature.FeatureJSON;
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37 import org.geotools.geometry.jts.JTS;
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38 import org.geotools.referencing.CRS;
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39
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40 import de.intevation.flys.model.RiverAxis;
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42
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43 public class GeometryUtils {
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44
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45 private static final Logger logger = Logger.getLogger(GeometryUtils.class);
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46
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47 public static final String DEFAULT_EPSG = "EPSG:31467";
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50 private GeometryUtils() {
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51 }
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52
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53
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54 public static Envelope getRiverBoundary(String rivername) {
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55 List<RiverAxis> axes = RiverAxis.getRiverAxis(rivername);
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56 if (axes != null && axes.size() > 0) {
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57 Envelope max = null;
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58
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59 for (RiverAxis axis: axes) {
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60 // TODO Take the correct EPSG into account. Maybe, we need to
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61 // reproject the geometry.
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62 Envelope env = axis.getGeom().getEnvelopeInternal();
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63
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64 if (max == null) {
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65 max = env;
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66 }
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67 else {
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68 max.expandToInclude(env);
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69 }
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70 }
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71
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72 return max;
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73 }
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parents: 1641
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75 return null;
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76 }
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79 public static String getRiverBounds(String rivername) {
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80 Envelope env = getRiverBoundary(rivername);
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81
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82 if (env == null) {
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83 return jtsBoundsToOLBounds(env);
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84 }
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85
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86 return null;
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87 }
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88
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89
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90 /**
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91 * Returns the boundary of Envelope <i>env</i> in OpenLayers
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92 * representation.
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93 *
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94 * @param env The envelope of a geometry.
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95 *
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96 * @return the OpenLayers boundary of <i>env</i>.
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97 */
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98 public static String jtsBoundsToOLBounds(Envelope env) {
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99 return "" +
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100 env.getMinX() + " " +
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101 env.getMinY() + " " +
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102 env.getMaxX() + " " +
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103 env.getMaxY();
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104 }
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105
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106
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107 public static String createOLBounds(Geometry a, Geometry b) {
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108 Coordinate[] ca = a.getCoordinates();
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109 Coordinate[] cb = b.getCoordinates();
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110
eb3ab28d1c21 The extent of the WSPLGEN facets are now determined by the extent of the start and end CrossSectionTrack of the WSPLGEN calculation.
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111 double lowerX = Double.MAX_VALUE;
eb3ab28d1c21 The extent of the WSPLGEN facets are now determined by the extent of the start and end CrossSectionTrack of the WSPLGEN calculation.
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112 double lowerY = Double.MAX_VALUE;
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113 double upperX = -Double.MAX_VALUE;
eb3ab28d1c21 The extent of the WSPLGEN facets are now determined by the extent of the start and end CrossSectionTrack of the WSPLGEN calculation.
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diff changeset
114 double upperY = -Double.MAX_VALUE;
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115
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diff changeset
116 for (Coordinate c: ca) {
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117 lowerX = lowerX < c.x ? lowerX : c.x;
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118 lowerY = lowerY < c.y ? lowerY : c.y;
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119
eb3ab28d1c21 The extent of the WSPLGEN facets are now determined by the extent of the start and end CrossSectionTrack of the WSPLGEN calculation.
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120 upperX = upperX > c.x ? upperX : c.x;
eb3ab28d1c21 The extent of the WSPLGEN facets are now determined by the extent of the start and end CrossSectionTrack of the WSPLGEN calculation.
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121 upperY = upperY > c.y ? upperY : c.y;
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diff changeset
122 }
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diff changeset
123
eb3ab28d1c21 The extent of the WSPLGEN facets are now determined by the extent of the start and end CrossSectionTrack of the WSPLGEN calculation.
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124 for (Coordinate c: cb) {
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125 lowerX = lowerX < c.x ? lowerX : c.x;
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126 lowerY = lowerY < c.y ? lowerY : c.y;
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127
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128 upperX = upperX > c.x ? upperX : c.x;
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129 upperY = upperY > c.y ? upperY : c.y;
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130 }
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131
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132 return "" + lowerX + " " + lowerY + " " + upperX + " " + upperY;
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133 }
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134
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135
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005c2964f9af Use the correct SRID while reading GeoJSON barriers and writing line/polygon shapefiles.
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136 public static SimpleFeatureType buildFeatureType(
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5b1198c27d43 Export riveraxis and crosssections to shapefiles for WSPLGEN.
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137 String name, String srs, Class geometryType)
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138 {
1119
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139 return buildFeatureType(name, srs, geometryType, null);
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140 }
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141
faca1825818e Write additional attributes ELEVATION and KILOMETER into crosssection track shapefiles.
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142
faca1825818e Write additional attributes ELEVATION and KILOMETER into crosssection track shapefiles.
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143 /**
faca1825818e Write additional attributes ELEVATION and KILOMETER into crosssection track shapefiles.
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144 * Creates a new SimpleFeatureType using a SimpleFeatureTypeBuilder.
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145 *
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146 * @param name The name of the FeatureType.
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147 * @param srs The SRS (e.g. "EPSG:31466").
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148 * @param geometryType The geometry type's class (e.g. Polygon.class).
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149 * @param attrs Optional. An object with attribute-name/attribute-class
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150 * pairs where index 0 specifies the name as string and index 1 the type
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151 * as class.
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152 *
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153 * @return a new SimpleFeatureType.
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154 */
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155 public static SimpleFeatureType buildFeatureType(
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156 String name, String srs, Class geometryType, Object[][] attrs)
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diff changeset
157 {
1108
5b1198c27d43 Export riveraxis and crosssections to shapefiles for WSPLGEN.
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diff changeset
158 try {
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diff changeset
159 SimpleFeatureTypeBuilder builder = new SimpleFeatureTypeBuilder();
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diff changeset
160 CoordinateReferenceSystem crs = CRS.decode(srs);
1106
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161
1108
5b1198c27d43 Export riveraxis and crosssections to shapefiles for WSPLGEN.
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162 builder.setName("flys");
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163 builder.setNamespaceURI("http://www.intevation.de/");
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164 builder.setCRS(crs);
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165 builder.setSRS(srs);
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166
1108
5b1198c27d43 Export riveraxis and crosssections to shapefiles for WSPLGEN.
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167 builder.add("geometry", geometryType, crs);
1106
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168
1119
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diff changeset
169 if (attrs != null) {
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170 for (Object[] attr: attrs) {
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diff changeset
171 builder.add((String) attr[0], (Class) attr[1]);
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diff changeset
172 }
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parents: 1108
diff changeset
173 }
faca1825818e Write additional attributes ELEVATION and KILOMETER into crosssection track shapefiles.
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diff changeset
174
1108
5b1198c27d43 Export riveraxis and crosssections to shapefiles for WSPLGEN.
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175 return builder.buildFeatureType();
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parents: 1107
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176 }
5b1198c27d43 Export riveraxis and crosssections to shapefiles for WSPLGEN.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1107
diff changeset
177 catch (NoSuchAuthorityCodeException nsae) {
5b1198c27d43 Export riveraxis and crosssections to shapefiles for WSPLGEN.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1107
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178 }
5b1198c27d43 Export riveraxis and crosssections to shapefiles for WSPLGEN.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1107
diff changeset
179 catch (FactoryException fe) {
5b1198c27d43 Export riveraxis and crosssections to shapefiles for WSPLGEN.
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parents: 1107
diff changeset
180 }
5b1198c27d43 Export riveraxis and crosssections to shapefiles for WSPLGEN.
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diff changeset
181
5b1198c27d43 Export riveraxis and crosssections to shapefiles for WSPLGEN.
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diff changeset
182 return null;
1106
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183 }
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diff changeset
184
e9f66d63bdd0 Write user defined barriers into a shapefile that is placed in the Artifact's directory.
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diff changeset
185
e9f66d63bdd0 Write user defined barriers into a shapefile that is placed in the Artifact's directory.
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diff changeset
186 public static List<SimpleFeature> parseGeoJSON(
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187 String geojson, SimpleFeatureType ft
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parents: 1052
diff changeset
188 ) {
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diff changeset
189 List<SimpleFeature> collection = new ArrayList<SimpleFeature>();
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190
e9f66d63bdd0 Write user defined barriers into a shapefile that is placed in the Artifact's directory.
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parents: 1052
diff changeset
191 try {
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parents: 1052
diff changeset
192 FeatureJSON fjson = new FeatureJSON();
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parents: 1052
diff changeset
193 fjson.setFeatureType(ft);
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diff changeset
194
e9f66d63bdd0 Write user defined barriers into a shapefile that is placed in the Artifact's directory.
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diff changeset
195 FeatureIterator<SimpleFeature> iterator =
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196 fjson.streamFeatureCollection(geojson);
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diff changeset
197
e9f66d63bdd0 Write user defined barriers into a shapefile that is placed in the Artifact's directory.
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diff changeset
198 while (iterator.hasNext()) {
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diff changeset
199 collection.add(iterator.next());
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parents: 1052
diff changeset
200 }
e9f66d63bdd0 Write user defined barriers into a shapefile that is placed in the Artifact's directory.
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parents: 1052
diff changeset
201 }
e9f66d63bdd0 Write user defined barriers into a shapefile that is placed in the Artifact's directory.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1052
diff changeset
202 catch (IOException ioe) {
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parents: 1052
diff changeset
203 // TODO handle exception
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parents: 1052
diff changeset
204 }
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parents: 1052
diff changeset
205
e9f66d63bdd0 Write user defined barriers into a shapefile that is placed in the Artifact's directory.
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diff changeset
206 return collection;
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parents: 1052
diff changeset
207 }
e9f66d63bdd0 Write user defined barriers into a shapefile that is placed in the Artifact's directory.
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parents: 1052
diff changeset
208
e9f66d63bdd0 Write user defined barriers into a shapefile that is placed in the Artifact's directory.
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parents: 1052
diff changeset
209
e9f66d63bdd0 Write user defined barriers into a shapefile that is placed in the Artifact's directory.
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diff changeset
210 public static boolean writeShapefile(
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parents: 1052
diff changeset
211 File shape,
e9f66d63bdd0 Write user defined barriers into a shapefile that is placed in the Artifact's directory.
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parents: 1052
diff changeset
212 SimpleFeatureType featureType,
1121
66783d957201 Close open shapefile transactions properly.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1119
diff changeset
213 FeatureCollection collection
66783d957201 Close open shapefile transactions properly.
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parents: 1119
diff changeset
214 ) {
2762
33aa37e6d98f Reproject geometries before exporting them as shapefiles to filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2078
diff changeset
215 return writeShapefile(
33aa37e6d98f Reproject geometries before exporting them as shapefiles to filesystem.
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parents: 2078
diff changeset
216 shape, featureType, collection, featureType.getCoordinateReferenceSystem());
33aa37e6d98f Reproject geometries before exporting them as shapefiles to filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2078
diff changeset
217 }
33aa37e6d98f Reproject geometries before exporting them as shapefiles to filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2078
diff changeset
218
33aa37e6d98f Reproject geometries before exporting them as shapefiles to filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2078
diff changeset
219
33aa37e6d98f Reproject geometries before exporting them as shapefiles to filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2078
diff changeset
220 public static boolean writeShapefile(
33aa37e6d98f Reproject geometries before exporting them as shapefiles to filesystem.
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parents: 2078
diff changeset
221 File shape,
33aa37e6d98f Reproject geometries before exporting them as shapefiles to filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2078
diff changeset
222 SimpleFeatureType featureType,
33aa37e6d98f Reproject geometries before exporting them as shapefiles to filesystem.
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parents: 2078
diff changeset
223 FeatureCollection collection,
33aa37e6d98f Reproject geometries before exporting them as shapefiles to filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2078
diff changeset
224 CoordinateReferenceSystem crs
33aa37e6d98f Reproject geometries before exporting them as shapefiles to filesystem.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 2078
diff changeset
225 ) {
1164
0398c2b8dbaf Do only create WSPLGEN and barrier facets if the WSPLGEN job has been added to the Scheduler and if there are digitized geometries existing.
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parents: 1144
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226 if (collection.isEmpty()) {
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227 logger.warn("Shapefile is not written - no features given!");
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228 return false;
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229 }
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230
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231 Transaction transaction = null;
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232
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233 try {
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234 MathTransform transform = CRS.findMathTransform(
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235 CRS.decode(DEFAULT_EPSG), crs);
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236
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237 Map<String, Serializable> params =
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238 new HashMap<String, Serializable>();
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239
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240 params.put("url", shape.toURI().toURL());
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241 params.put("create spatial index", Boolean.TRUE);
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242
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243 DataStoreFactorySpi dataStoreFactory =
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244 new ShapefileDataStoreFactory();
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245
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246 ShapefileDataStore newDataStore =
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247 (ShapefileDataStore)dataStoreFactory.createNewDataStore(params);
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248 newDataStore.createSchema(featureType);
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249
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250 transaction = new DefaultTransaction("create");
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251
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252 String typeName = newDataStore.getTypeNames()[0];
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253
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254 FeatureWriter<SimpleFeatureType, SimpleFeature> writer =
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255 newDataStore.getFeatureWriter(typeName, transaction);
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256
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257 SimpleFeatureIterator iterator = (SimpleFeatureIterator) collection.features();
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258
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259 while (iterator.hasNext()){
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260 SimpleFeature feature = iterator.next();
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261 SimpleFeature copy = writer.next();
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262
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263 copy.setAttributes(feature.getAttributes());
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264
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265 Geometry orig = (Geometry) feature.getDefaultGeometry();
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266 Geometry reprojected = JTS.transform(orig, transform);
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267
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268 copy.setDefaultGeometry(reprojected);
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269 writer.write();
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270 }
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271
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272 transaction.commit();
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273
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274 return true;
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275 }
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276 catch (MalformedURLException mue) {
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277 logger.error("Unable to prepare shapefile: " + mue.getMessage());
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278 }
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279 catch (IOException ioe) {
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280 logger.error("Unable to write shapefile: " + ioe.getMessage());
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281 }
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282 catch (NoSuchAuthorityCodeException nsae) {
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283 logger.error("Cannot get CoordinateReferenceSystem for '"
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284 + DEFAULT_EPSG + "'");
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285 }
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286 catch (FactoryException fe) {
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287 logger.error("Cannot get CoordinateReferenceSystem for '"
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288 + DEFAULT_EPSG + "'");
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289 }
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290 catch (TransformException te) {
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291 logger.error("Was not able to transform geometry!", te);
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292 }
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293 finally {
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294 if (transaction != null) {
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295 try {
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296 transaction.close();
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297 }
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298 catch (IOException ioe) { /* do nothing */ }
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299 }
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300 }
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301
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302 return false;
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303 }
1052
eeebf8514c7f The boundary (extent) for the river axis is determined based on its geometry - this extent is written into the wms facet.
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parents:
diff changeset
304 }
eeebf8514c7f The boundary (extent) for the river axis is determined based on its geometry - this extent is written into the wms facet.
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parents:
diff changeset
305 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org