+++ /dev/null
-package org.argeo.app.geo;
-
-import java.io.BufferedReader;
-import java.io.File;
-import java.io.InputStreamReader;
-import java.io.Serializable;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-import org.geotools.data.DataUtilities;
-import org.geotools.data.DefaultTransaction;
-import org.geotools.data.Transaction;
-import org.geotools.data.collection.ListFeatureCollection;
-import org.geotools.data.shapefile.ShapefileDataStore;
-import org.geotools.data.shapefile.ShapefileDataStoreFactory;
-import org.geotools.data.simple.SimpleFeatureCollection;
-import org.geotools.data.simple.SimpleFeatureSource;
-import org.geotools.data.simple.SimpleFeatureStore;
-import org.geotools.feature.simple.SimpleFeatureBuilder;
-import org.geotools.geometry.jts.JTSFactoryFinder;
-import org.geotools.swing.data.JFileDataStoreChooser;
-import org.locationtech.jts.geom.Coordinate;
-import org.locationtech.jts.geom.Geometry;
-import org.locationtech.jts.geom.GeometryFactory;
-import org.locationtech.jts.geom.LineString;
-import org.locationtech.jts.geom.Point;
-import org.opengis.feature.simple.SimpleFeature;
-import org.opengis.feature.simple.SimpleFeatureType;
-
-public class GeoToolsTest {
- public GeoToolsTest() {
-
- }
-
- public void init() {
- try {
- main(null);
- } catch (Exception e) {
- e.printStackTrace();
- }
- }
-
- public void destroy() {
-
- }
-
- public static void main(String[] args) throws Exception {
- final SimpleFeatureType TYPE = DataUtilities.createType("Location", "the_geom:Point:srid=4326," + // <- the
- // geometry
- // attribute:
- // Point
- // type
- "name:String," + // <- a String attribute
- "number:Integer" // a number attribute
- );
- final SimpleFeatureType TYPE_HULL = DataUtilities.createType("Hull", "the_geom:MultiPolygon:srid=4326");
- System.out.println("TYPE:" + TYPE);
-
- /*
- * A list to collect features as we create them.
- */
- List<SimpleFeature> features = new ArrayList<>();
- List<Coordinate> coordinates = new ArrayList<>();
-
- /*
- * GeometryFactory will be used to create the geometry attribute of each
- * feature, using a Point object for the location.
- */
- GeometryFactory geometryFactory = JTSFactoryFinder.getGeometryFactory();
-
- SimpleFeatureBuilder featureBuilder = new SimpleFeatureBuilder(TYPE);
-
- try (BufferedReader reader = new BufferedReader(
- new InputStreamReader(GeoToolsTest.class.getResourceAsStream("/org/djapps/on/apaf/locations.csv")))) {
- /* First line of the data file is the header */
- String line = reader.readLine();
- System.out.println("Header: " + line);
-
- for (line = reader.readLine(); line != null; line = reader.readLine()) {
- if (line.trim().length() > 0) { // skip blank lines
- String[] tokens = line.split("\\,");
-
- double latitude = Double.parseDouble(tokens[0]);
- double longitude = Double.parseDouble(tokens[1]);
- String name = tokens[2].trim();
- int number = Integer.parseInt(tokens[3].trim());
-
- /* Longitude (= x coord) first ! */
- Coordinate coordinate = new Coordinate(longitude, latitude);
- coordinates.add(coordinate);
- Point point = geometryFactory.createPoint(coordinate);
-
- featureBuilder.add(point);
- featureBuilder.add(name);
- featureBuilder.add(number);
- SimpleFeature feature = featureBuilder.buildFeature(null);
- features.add(feature);
- }
- }
- }
-
- LineString lineString = geometryFactory
- .createLineString(coordinates.toArray(new Coordinate[coordinates.size()]));
- Geometry convexHull = lineString.convexHull();
- System.out.println(convexHull.toText());
- SimpleFeatureBuilder hullFeatureBuilder = new SimpleFeatureBuilder(TYPE_HULL);
- hullFeatureBuilder.add(convexHull);
- SimpleFeature hull = hullFeatureBuilder.buildFeature(null);
-
- /*
- * Get an output file name and create the new shapefile
- */
- File newFile = getNewShapeFile();
-
- ShapefileDataStoreFactory dataStoreFactory = new ShapefileDataStoreFactory();
-
- Map<String, Serializable> params = new HashMap<>();
- params.put("url", newFile.toURI().toURL());
- params.put("create spatial index", Boolean.TRUE);
-
- ShapefileDataStore newDataStore = (ShapefileDataStore) dataStoreFactory.createNewDataStore(params);
-
- /*
- * TYPE is used as a template to describe the file contents
- */
- newDataStore.createSchema(TYPE_HULL);
-
- /*
- * Write the features to the shapefile
- */
- Transaction transaction = new DefaultTransaction("create");
-
- String typeName = newDataStore.getTypeNames()[0];
- SimpleFeatureSource featureSource = newDataStore.getFeatureSource(typeName);
- SimpleFeatureType SHAPE_TYPE = featureSource.getSchema();
- /*
- * The Shapefile format has a couple limitations: - "the_geom" is always first,
- * and used for the geometry attribute name - "the_geom" must be of type Point,
- * MultiPoint, MuiltiLineString, MultiPolygon - Attribute names are limited in
- * length - Not all data types are supported (example Timestamp represented as
- * Date)
- *
- * Each data store has different limitations so check the resulting
- * SimpleFeatureType.
- */
- System.out.println("SHAPE:" + SHAPE_TYPE);
-
- if (featureSource instanceof SimpleFeatureStore) {
- SimpleFeatureStore featureStore = (SimpleFeatureStore) featureSource;
- /*
- * SimpleFeatureStore has a method to add features from a
- * SimpleFeatureCollection object, so we use the ListFeatureCollection class to
- * wrap our list of features.
- */
- SimpleFeatureCollection collection = new ListFeatureCollection(TYPE, Collections.singletonList(hull));
- featureStore.setTransaction(transaction);
- try {
- featureStore.addFeatures(collection);
- transaction.commit();
- } catch (Exception problem) {
- problem.printStackTrace();
- transaction.rollback();
- } finally {
- transaction.close();
- }
- } else {
- System.out.println(typeName + " does not support read/write access");
- }
-// if (featureSource instanceof SimpleFeatureStore) {
-// SimpleFeatureStore featureStore = (SimpleFeatureStore) featureSource;
-// /*
-// * SimpleFeatureStore has a method to add features from a
-// * SimpleFeatureCollection object, so we use the ListFeatureCollection class to
-// * wrap our list of features.
-// */
-// SimpleFeatureCollection collection = new ListFeatureCollection(TYPE, features);
-// featureStore.setTransaction(transaction);
-// try {
-// featureStore.addFeatures(collection);
-// transaction.commit();
-// } catch (Exception problem) {
-// problem.printStackTrace();
-// transaction.rollback();
-// } finally {
-// transaction.close();
-// }
-// } else {
-// System.out.println(typeName + " does not support read/write access");
-// }
- }
-
- /**
- * Prompt the user for the name and path to use for the output shapefile
- *
- * @param csvFile the input csv file used to create a default shapefile name
- * @return name and path for the shapefile as a new File object
- */
- private static File getNewShapeFile() {
-// String path = csvFile.getAbsolutePath();
-// String newPath = path.substring(0, path.length() - 4) + ".shp";
-
- JFileDataStoreChooser chooser = new JFileDataStoreChooser("shp");
- chooser.setDialogTitle("Save shapefile");
-// chooser.setSelectedFile(new File(newPath));
-
- int returnVal = chooser.showSaveDialog(null);
-
- if (returnVal != JFileDataStoreChooser.APPROVE_OPTION) {
- // the user cancelled the dialog
- System.exit(0);
- }
-
- File newFile = chooser.getSelectedFile();
-
- return newFile;
- }
-
-}
projects / gpl / argeo-suite.git / blobdiff