svn - r34300 - trunk/demo/example/src/main/java/org/geotools/demo/xml

[svn_geotools]

Author: mbedward
Date: 2009-11-01 23:43:17 -0500 (Sun, 01 Nov 2009)
New Revision: 34300

Added:
   trunk/demo/example/src/main/java/org/geotools/demo/xml/KMLExample.java
Log:
simple KML example

Added: trunk/demo/example/src/main/java/org/geotools/demo/xml/KMLExample.java
===================================================================
--- trunk/demo/example/src/main/java/org/geotools/demo/xml/KMLExample.java                        (rev 0)
+++ trunk/demo/example/src/main/java/org/geotools/demo/xml/KMLExample.java 2009-11-02 04:43:17 UTC (rev 34300)
@@ -0,0 +1,117 @@
+/*
+/*
+ *    GeoTools - The Open Source Java GIS Tookit
+ *    http://geotools.org
+ *
+ *    (C) 2006-2008, Open Source Geospatial Foundation (OSGeo)
+ *
+ *    This file is hereby placed into the Public Domain. This means anyone is
+ *    free to do whatever they wish with this file. Use it well and enjoy!
+ */
+
+package org.geotools.demo.xml;
+
+import com.vividsolutions.jts.geom.Coordinate;
+import com.vividsolutions.jts.geom.Geometry;
+import com.vividsolutions.jts.geom.GeometryFactory;
+import com.vividsolutions.jts.geom.Point;
+import com.vividsolutions.jts.io.WKTReader;
+import org.geotools.feature.FeatureCollection;
+import org.geotools.feature.FeatureCollections;
+import org.geotools.feature.simple.SimpleFeatureBuilder;
+import org.geotools.feature.simple.SimpleFeatureTypeBuilder;
+import org.geotools.geometry.jts.JTSFactoryFinder;
+import org.geotools.kml.KML;
+import org.geotools.kml.KMLConfiguration;
+import org.geotools.referencing.crs.DefaultGeographicCRS;
+import org.geotools.xml.Encoder;
+import org.opengis.feature.simple.SimpleFeature;
+import org.opengis.feature.simple.SimpleFeatureType;
+
+/**
+ * This example illustrates how to produce KML representations
+ * of geometry objects and feature collections.
+ *
+ * @source $URL$
+ */
+public class KMLExample {
+
+    public static void main(String[] args) throws Exception {
+        KMLExample me = new KMLExample();
+
+        me.polygonToKML();
+        me.featureCollectionToKML();
+    }
+
+    /**
+     * Creates a JTS Polygon object and writes it to the console
+     * encoded as KML
+     */
+    private void polygonToKML() throws Exception {
+        GeometryFactory gf = JTSFactoryFinder.getGeometryFactory(null);
+        WKTReader reader = new WKTReader(gf);
+        Geometry triangle = reader.read("POLYGON((0 0, 10 20, 20 0, 0 0))");
+
+        Encoder encoder = new Encoder(new KMLConfiguration());
+        encoder.setIndenting(true);
+        encoder.encode(triangle, KML.Polygon, System.out);
+    }
+
+    /**
+     * Writes a small feature collection (world cities) to the console
+     * encoded as KML
+     */
+    private void featureCollectionToKML() throws Exception {
+        FeatureCollection<SimpleFeatureType, SimpleFeature> features = createSampleFeatures();
+        Encoder encoder = new Encoder(new KMLConfiguration());
+        encoder.setIndenting(true);
+        encoder.encode(features, KML.kml, System.out );
+    }
+
+    /**
+     * This method creates a small collection of world city features. Each feature has
+     * location (Point), name (String) and country (String) attributes.
+     *
+     * If the code here doesn't make sense to you, have a look at the
+     * example: <a href="http://geotools.org/examples/csv2shp.html">CSV To Shape Lab</a>
+     * for an introduction to Feature, FeatureType and FeatureCollection.
+     */
+    private FeatureCollection<SimpleFeatureType, SimpleFeature> createSampleFeatures() {
+        SimpleFeatureTypeBuilder typeBuilder = new SimpleFeatureTypeBuilder();
+        typeBuilder.setName("cities");
+        typeBuilder.add("geometry", Point.class, DefaultGeographicCRS.WGS84);
+        typeBuilder.add("name", String.class);
+        typeBuilder.add("country", String.class);
+        SimpleFeatureType TYPE = typeBuilder.buildFeatureType();
+
+        SimpleFeatureBuilder featureBuilder = new SimpleFeatureBuilder(TYPE);
+        GeometryFactory gf = JTSFactoryFinder.getGeometryFactory(null);
+        FeatureCollection<SimpleFeatureType, SimpleFeature> features = FeatureCollections.newCollection();
+
+        // Rome
+        featureBuilder.add(gf.createPoint(new Coordinate(12.5000, 41.8833)));
+        featureBuilder.add("Rome");
+        featureBuilder.add("Italy");
+        features.add( featureBuilder.buildFeature("1") );
+
+        // New York
+        featureBuilder.add(gf.createPoint(new Coordinate(-74.0000, 40.7000)));
+        featureBuilder.add("New York");
+        featureBuilder.add("USA");
+        features.add( featureBuilder.buildFeature("2") );
+
+        // Paris
+        featureBuilder.add(gf.createPoint(new Coordinate(2.3333, 48.8667)));
+        featureBuilder.add("Paris");
+        featureBuilder.add("France");
+        features.add( featureBuilder.buildFeature("3") );
+
+        // London
+        featureBuilder.add(gf.createPoint(new Coordinate(-0.0833, 51.5000)));
+        featureBuilder.add("London");
+        featureBuilder.add("England");
+        features.add( featureBuilder.buildFeature("4") );
+
+        return features;
+    }
+}


Property changes on: trunk/demo/example/src/main/java/org/geotools/demo/xml/KMLExample.java
___________________________________________________________________
Added: svn:keywords
   + Id URL


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