Re: [Geotools-gt2-users] Exporting to shape file with projection coordinates

[Jody G. <jod...@gm...>]

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 <sur...@gm...> 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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