I am not sure I understand where you are stuck? What do you mean by "including
geodetic coordinates" ?
Jody Garnett
On Mon, Oct 13, 2014 at 10:57 PM, suri <surendranath1...@gmail.com> wrote:
>
> I have collections of polygon features. Each point in a polygon has local
> cooridantes (x y values) and geodetic Coordinates (latitude and longitude
> in decimal degree computed externaly) i can export the shape file(vector)
> with xy values using geotools.
>
> How can i export the data by including geodetic coordinates?
>
>
> Point - X Y values - correspoinding latitude and longitude
>
> Polygon points have coordinates with (x y values) i have find the latlong
> values for each point in the shapefile externally by using rubbersheeting
> method given in
> http://www.corrmap.com/features/rubber-sheeting_transformation.php now i
> need to project the lat long values into the shapefile along with x y
> values of the points.
>
>
> Polygons [ p1,p2,p3,p4........soon]
> p1 - (x ,y) already in the shapefile (lat, long) computed externally.
>
> id-->*******x********y***************lon*********lat
>
> 79-->(8912.811,1481.9799):(80.205185,13.336138)
>
> 80-->(8912.811,1481.9766):(80.205185,13.336108)
>
> 93-->(8912.656,1481.9835):(80.2038,13.336171)
>
> 140-->(8912.8125,1482.0161):(80.20521,13.336465)
>
>
> My code for exporting shape file with x and y coordinates and i need to
> include projection (lat long).
>
> /**
> * Writes the Shapes in the featureList into the given File
> *
> * @param theFile Reference to the File
> * @param featureList The list of features to be written
> *
> * @return TRUE if successfully written; Else FALSE
> */
> public boolean writeShape(File theFile, List featureList) throws
> Exception
> {
> ShapefileDataStoreFactory dSFactory = new
> ShapefileDataStoreFactory();
>
> Map params = new HashMap();
> params.put("url", theFile.toURI().toURL());
> params.put("create spatial index", Boolean.TRUE);
>
> ShapefileDataStore newDataStore =
> (ShapefileDataStore)
> dSFactory.createNewDataStore(params);
>
> newDataStore.createSchema(featureBuilder.getFeatureType());
> newDataStore.forceSchemaCRS(DefaultGeographicCRS.WGS84);
>
> String typeName = newDataStore.getTypeNames()[0];
> SimpleFeatureSource featureSource =
>
> newDataStore.getFeatureSource(typeName);
>
> boolean success = false;
> if (featureSource instanceof SimpleFeatureStore)
> {
> SimpleFeatureStore featureStore =
> (SimpleFeatureStore)featureSource;
>
> SimpleFeatureCollection collection =
> new
> ListFeatureCollection(featureBuilder.getFeatureType(),
> featureList);
>
> Transaction transaction = new DefaultTransaction("create");
> featureStore.setTransaction(transaction);
>
> try
> {
> featureStore.addFeatures(collection);
> transaction.commit();
> success = true;
> }
> catch (Exception exp)
> {
> if (DEBUG) exp.printStackTrace();
> transaction.rollback();
> success = false;
> }
> finally
> {
> transaction.close();
> }
> }
>
> if (success) showMessage(sCreated);
> return success;
> }
>
> private SimpleFeatureBuilder createFeatureBuilder()
> {
> SimpleFeatureTypeBuilder builder = new SimpleFeatureTypeBuilder();
> builder.setCRS(DefaultGeographicCRS.WGS84);
> builder.setName(plotName);
>
> builder.add(sPolygon, Polygon.class);
> builder.length(32).add(plotName, String.class);
> builder.length(32).add(sArea, String.class);
>
> final SimpleFeatureType featureType = builder.buildFeatureType();
> return new SimpleFeatureBuilder(featureType);
> }
>
> public boolean addPolygonFeature(List featureList, Point3D[] thePoints,
> String polyId, float area) throws
> Exception
> {
> Polygon aPoly = createPolygon(thePoints);
>
> if (aPoly == null)
> {
> StringBuffer buf = new StringBuffer();
> buf.append(WError1);
> buf.append(polyId);
> buf.append(WError2);
> String error = buf.toString();
>
> int opt = GUIBase.showConfirmDialog(error, "Confirm", GUI_YN);
> return (opt == GUIBase.GUI_YES);
> }
>
> SimpleFeature feature = featureBuilder.buildFeature(null);
> feature.setAttribute(plotName, polyId);
> feature.setAttribute(sPolygon, aPoly);
> feature.setAttribute(sArea, area);
> featureList.add(feature);
> return true;
> }
>
> /**
> * Creates a polygon feature from Array of FMBPoints
> *
> * @param thePoints Array of Point3Ds
> *
> * @return Reference to the Polygon object
> */
> public static Polygon createPolygon(Point3D[] thePoints)
> {
> int count = (thePoints == null) ? 0 : thePoints.length;
> if (count < 1) return null;
>
> // Store Coordinates of polygon as a LINESTRING.
> StringBuffer buffer = new StringBuffer();
> buffer.append("POLYGON((");
>
> for (int i=0; i<count; i++)
> {
> buffer.append(thePoints[i].x);
> buffer.append(SPACE);
> buffer.append(thePoints[i].y);
> buffer.append(COMMA);
> }
>
> String lineString = buffer.toString();
> lineString = lineString.substring(0, lineString.length()-1) + "))";
> if (DEBUG) System.out.println(lineString);
>
> try
> {
> // Creating the Geometry (Polygon)
> return (Polygon) wktReader.read(lineString);
> }
> catch (Exception excep) { }
>
> return null;
> }
>
>
>
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>
>
> yours suri chinna
>
>
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