Transformation 将形状文件从epsg:4326投影到epsg:32056时出错
我一直在尝试将Shapefile的投影从一个坐标系更改为另一个坐标系。我使用的shapefile将EPSG:4326作为其参考系统,我需要将其更改为EPSG:32056。 我使用Geotools API-20.0实现同样的目的 我已经尝试过geotools中可用的各种方法,比如使用重投影FeatureCollection、使用JTS、使用查询API将shapefile直接转换为其他坐标参考系Transformation 将形状文件从epsg:4326投影到epsg:32056时出错,transformation,geotools,Transformation,Geotools,我一直在尝试将Shapefile的投影从一个坐标系更改为另一个坐标系。我使用的shapefile将EPSG:4326作为其参考系统,我需要将其更改为EPSG:32056。 我使用Geotools API-20.0实现同样的目的 我已经尝试过geotools中可用的各种方法,比如使用重投影FeatureCollection、使用JTS、使用查询API将shapefile直接转换为其他坐标参考系 import java.awt.event.ActionEvent; import java
import java.awt.event.ActionEvent;
import java.io.File;
import java.io.InputStream;
import java.io.Serializable;
import java.net.URI;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JOptionPane;
import javax.swing.JToolBar;
import javax.swing.SwingWorker;
import org.geotools.data.DataStore;
import org.geotools.data.DataStoreFactorySpi;
import org.geotools.data.DefaultTransaction;
import org.geotools.data.FeatureWriter;
import org.geotools.data.FileDataStore;
import org.geotools.data.FileDataStoreFinder;
import org.geotools.data.Query;
import org.geotools.data.Transaction;
import org.geotools.data.shapefile.ShapefileDataStoreFactory;
import org.geotools.data.simple.SimpleFeatureCollection;
import org.geotools.data.simple.SimpleFeatureIterator;
import org.geotools.data.simple.SimpleFeatureSource;
import org.geotools.data.simple.SimpleFeatureStore;
import org.geotools.feature.simple.SimpleFeatureTypeBuilder;
import org.geotools.geometry.jts.JTS;
import org.geotools.geometry.jts.ReferencedEnvelope;
import org.geotools.map.FeatureLayer;
import org.geotools.map.Layer;
import org.geotools.map.MapContent;
import org.geotools.referencing.CRS;
import org.geotools.referencing.ReferencingFactoryFinder;
import org.geotools.referencing.factory.gridshift.GridShiftLocator;
import org.geotools.styling.SLD;
import org.geotools.styling.Style;
import org.geotools.swing.JMapFrame;
import org.geotools.swing.JProgressWindow;
import org.geotools.swing.action.SafeAction;
import org.geotools.swing.data.JFileDataStoreChooser;
import org.locationtech.jts.geom.Envelope;
import org.opengis.feature.Feature;
import org.opengis.feature.FeatureVisitor;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;
import org.opengis.feature.type.FeatureType;
import org.opengis.referencing.crs.CoordinateReferenceSystem;
import org.opengis.referencing.operation.MathTransform;
import org.opengis.util.ProgressListener;
import com.vividsolutions.jts.geom.Geometry;
public class CRSLab {
private File sourceFile;
private SimpleFeatureSource featureSource;
private MapContent map;
public static void main(String[] args) throws Exception {
CRSLab lab = new CRSLab();
lab.displayShapefile();
}
// docs end main
/**
* This method:
* <ol type="1">
* <li>Prompts the user for a shapefile to display
* <li>Creates a JMapFrame with custom toolbar buttons
* <li>Displays the shapefile
* </ol>
*/
// docs start display
private void displayShapefile() throws Exception {
sourceFile = JFileDataStoreChooser.showOpenFile("shp", null);
if (sourceFile == null) {
return;
}
FileDataStore store = FileDataStoreFinder.getDataStore(sourceFile);
featureSource = store.getFeatureSource();
// Create a map context and add our shapefile to it
map = new MapContent();
Style style = SLD.createSimpleStyle(featureSource.getSchema());
Layer layer = new FeatureLayer(featureSource, style);
map.layers().add(layer);
// Create a JMapFrame with custom toolbar buttons
JMapFrame mapFrame = new JMapFrame(map);
mapFrame.enableToolBar(true);
mapFrame.enableStatusBar(true);
JToolBar toolbar = mapFrame.getToolBar();
toolbar.addSeparator();
toolbar.add(new JButton(new ValidateGeometryAction()));
toolbar.add(new JButton(new ExportShapefileAction()));
// Display the map frame. When it is closed the application will exit
mapFrame.setSize(800, 600);
mapFrame.setVisible(true);
}
// docs end display
// docs start export
private void exportToShapefile() throws Exception {
SimpleFeatureType schema = featureSource.getSchema();
JFileDataStoreChooser chooser = new JFileDataStoreChooser("shp");
chooser.setDialogTitle("Save reprojected shapefile");
chooser.setSaveFile(sourceFile);
int returnVal = chooser.showSaveDialog(null);
if (returnVal != JFileDataStoreChooser.APPROVE_OPTION) {
return;
}
File file = chooser.getSelectedFile();
if (file.equals(sourceFile)) {
JOptionPane.showMessageDialog(null, "Cannot replace " + file);
return;
}
// set up the math transform used to process the data
CoordinateReferenceSystem dataCRS = schema.getCoordinateReferenceSystem();
CoordinateReferenceSystem worldCRS = CRS.decode("EPSG:32056", true);// map.getCoordinateReferenceSystem();
boolean lenient = true; // allow for some error due to different datums
MathTransform transform = CRS.findMathTransform(dataCRS, worldCRS, lenient);
// grab all features
SimpleFeatureCollection featureCollection = featureSource.getFeatures();
// And create a new Shapefile with a slight modified schema
DataStoreFactorySpi factory = new ShapefileDataStoreFactory();
Map<String, Serializable> create = new HashMap<String, Serializable>();
create.put("url", file.toURI().toURL());
create.put("create spatial index", Boolean.TRUE);
DataStore dataStore = factory.createNewDataStore(create);
SimpleFeatureType featureType = SimpleFeatureTypeBuilder.retype(schema, worldCRS);
dataStore.createSchema(featureType);
String createdName = dataStore.getTypeNames()[0];
// carefully open an iterator and writer to process the results
Transaction transaction = new DefaultTransaction("Reproject");
FeatureWriter<SimpleFeatureType, SimpleFeature> writer = dataStore.getFeatureWriterAppend(createdName,
transaction);
SimpleFeatureIterator iterator = featureCollection.features();
try {
int counter = 0;
while (iterator.hasNext()) {
// copy the contents of each feature and transform the geometry
SimpleFeature feature = iterator.next();
SimpleFeature copy = writer.next();
org.locationtech.jts.geom.Geometry geometry = (org.locationtech.jts.geom.Geometry) feature
.getDefaultGeometry();
org.locationtech.jts.geom.Geometry geometry2 = JTS.transform(geometry, transform);
System.out.println(geometry.isSimple() && geometry2.isSimple());
// if (geometry2.isValid()) {
copy.setAttributes(feature.getAttributes());
counter++;
copy.setDefaultGeometry(geometry2);
writer.write();
// }
}
transaction.commit();
System.out.println("valid geometries : " + counter);
JOptionPane.showMessageDialog(null, "Export to shapefile complete");
} catch (Exception problem) {
problem.printStackTrace();
transaction.rollback();
JOptionPane.showMessageDialog(null, "Export to shapefile failed");
} finally {
writer.close();
iterator.close();
transaction.close();
}
}
// docs end export
// docs start validate
private int validateFeatureGeometry(ProgressListener progress) throws Exception {
final SimpleFeatureCollection featureCollection = featureSource.getFeatures();
// Rather than use an iterator, create a FeatureVisitor to check each
// fature
class ValidationVisitor implements FeatureVisitor {
public int numInvalidGeometries = 0;
public void visit(Feature f) {
SimpleFeature feature = (SimpleFeature) f;
Geometry geom = (Geometry) feature.getDefaultGeometry();
if (geom != null && !geom.isValid()) {
numInvalidGeometries++;
System.out.println("Invalid Geoemtry: " + feature.getID());
}
}
}
ValidationVisitor visitor = new ValidationVisitor();
// Pass visitor and the progress bar to feature collection
featureCollection.accepts(visitor, progress);
return visitor.numInvalidGeometries;
}
// docs end validate
// docs start export action
class ExportShapefileAction extends SafeAction {
ExportShapefileAction() {
super("Export...");
putValue(Action.SHORT_DESCRIPTION, "Export using current crs");
}
public void action(ActionEvent e) throws Throwable {
exportToShapefile();
}
}
// docs end export action
/**
* This class performs the task of checking that the Geometry of each
* feature is topologically valid and reports on the results. It also
* supplies the name and tool tip.
*/
// docs start validate action
class ValidateGeometryAction extends SafeAction {
ValidateGeometryAction() {
super("Validate geometry");
putValue(Action.SHORT_DESCRIPTION, "Check each geometry");
}
public void action(ActionEvent e) throws Throwable {
int numInvalid = validateFeatureGeometry(null);
String msg;
if (numInvalid == 0) {
msg = "All feature geometries are valid";
} else {
msg = "Invalid geometries: " + numInvalid;
}
JOptionPane.showMessageDialog(null, msg, "Geometry results", JOptionPane.INFORMATION_MESSAGE);
}
}
// docs end validate action
}
导入java.awt.event.ActionEvent;
导入java.io.File;
导入java.io.InputStream;
导入java.io.Serializable;
导入java.net.URI;
导入java.net.URL;
导入java.util.HashMap;
导入java.util.Map;
导入java.util.Set;
导入javax.swing.Action;
导入javax.swing.JButton;
导入javax.swing.JOptionPane;
导入javax.swing.JToolBar;
导入javax.swing.SwingWorker;
导入org.geotools.data.DataStore;
导入org.geotools.data.DataStoreFactorySpi;
导入org.geotools.data.DefaultTransaction;
导入org.geotools.data.FeatureWriter;
导入org.geotools.data.FileDataStore;
导入org.geotools.data.FileDataStoreFinder;
导入org.geotools.data.Query;
导入org.geotools.data.Transaction;
导入org.geotools.data.shapefile.ShapefileDataStoreFactory;
导入org.geotools.data.simple.SimpleFeatureCollection;
导入org.geotools.data.simple.SimpleFeatureIterator;
导入org.geotools.data.simple.SimpleFeatureSource;
导入org.geotools.data.simple.SimpleFeatureStore;
导入org.geotools.feature.simple.SimpleFeatureTypeBuilder;
导入org.geotools.geometry.jts.jts;
导入org.geotools.geometry.jts.ReferenceDevelope;
导入org.geotools.map.FeatureLayer;
导入org.geotools.map.Layer;
导入org.geotools.map.MapContent;
导入org.geotools.reference.CRS;
导入org.geotools.reference.referencengFactoryFinder;
导入org.geotools.referenting.factory.gridshift.GridShiftLocator;
导入org.geotools.style.SLD;
导入org.geotools.Style.Style;
导入org.geotools.swing.JMapFrame;
导入org.geotools.swing.JProgressWindow;
导入org.geotools.swing.action.SafeAction;
导入org.geotools.swing.data.jfiledatastoreselector;
导入org.locationtech.jts.geom.Envelope;
导入org.opengis.feature.feature;
导入org.opengis.feature.FeatureVisitor;
导入org.opengis.feature.simple.SimpleFeature;
导入org.opengis.feature.simple.SimpleFeatureType;
导入org.opengis.feature.type.FeatureType;
导入org.opengis.reference.crs.CoordinateReferenceSystem;
导入org.opengis.reference.operation.MathTransform;
导入org.opengis.util.ProgressListener;
导入com.lividsolutions.jts.geom.Geometry;
公共类实验室{
私有文件源文件;
私有SimpleFeatureSource功能源;
私有地图内容地图;
公共静态void main(字符串[]args)引发异常{
CRSLab lab=新的CRSLab();
lab.displayShapefile();
}
//末端总管
/**
*此方法:
*
*提示用户显示形状文件
* 使用自定义工具栏按钮创建JMapFrame
* 显示形状文件
*
*/
//文档开始显示
私有void displayShapefile()引发异常{
sourceFile=jfiledatastoreselector.showOpenFile(“shp”,null);
if(sourceFile==null){
返回;
}
FileDataStore store=FileDataStoreFinder.getDataStore(sourceFile);
featureSource=store.getFeatureSource();
//创建一个映射上下文并将我们的shapefile添加到其中
map=新的MapContent();
Style Style=SLD.createSimpleStyle(featureSource.getSchema());
图层=新的FeatureLayer(featureSource,style);
map.layers().add(层);
//使用自定义工具栏按钮创建JMapFrame
JMapFrame mapFrame=新的JMapFrame(map);
mapFrame.enableToolBar(true);
mapFrame.enableStatusBar(真);
JToolBar toolbar=mapFrame.getToolBar();
toolbar.addSeparator();
add(newjbutton(newvalidategeometryAction());
添加(新的JButton(新的ExportShapefileAction());
//显示地图框。当它关闭时,应用程序将退出
mapFrame.setSize(800600);
mapFrame.setVisible(true);
}
//文档结束显示
//文件开始导出
私有void exportToShapefile()引发异常{
SimpleFeatureType架构=featureSource.getSchema();
JFileDataStoreSchooser=新的JFileDataStoreSchooser(“shp”);
setDialogTitle(“保存重新投影的形状文件”);
选择器.setSaveFile(源文件);
int returnVal=chooser.showsavedilog(null);
if(returnVal!=jfiledatastoreselector.APPROVE\u选项){
返回;
}
File File=chooser.getSelectedFile();
if(file.equals(sourceFile)){
showMessageDialog(null,“无法替换”+文件);
返回;
}
//设置用于处理数据的数学变换
CoordinateReferenceSystem dataCRS=schema.getCoordinateReferenceSystem();
CoordinateReferenceSystem worldCRS=CRS.decode(“EPSG:32056”,true);//map.getCoordinateReferenceSystem();
boolean lenient=true;//允许由于不同基准而出现一些错误
MathTransform=CRS.findMathTransform(数据转换、世界转换、宽大);
//抓取所有功能
SimpleFeatureCollection featureCollection=featureSource.getFeatures();
//并创建一个新的Shapefile,其中包含一个稍微修改过的模式
DataStoreFactorySpi工厂=新的ShapefileDataStoreFactory();
Map create=newhashmap();
create.put(“url”,file.toURI().tour());
create.put(“创建空间索引”,Boolean.TRUE);
DataStore DataStore=factory.createNewDataStore(create);
SimpleFeatureType featureType=SimpleFeatureTypeBuilder.retype(模式,worldCRS);