Re: [Geotools-gt2-users] Problems with .prj while saving a shapefile

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

Hey.

The shapefile datastore does not seem to be writing out the prj very 
well. I know a work around - but I think you are the first person to 
look at why this problem is occurring.

After calling:

shapefileDataStore.createSchema(collection.getSchema());

You can force the prj file to be written:
shapefile.|*forceSchemaCRS <../../../../org/geotools/data/shapefile/ShapefileDataStore.html#forceSchemaCRS%28org.opengis.referencing.crs.CoordinateReferenceSystem%29>*(crs)| 

This workaround has been present in the CSV2Shp Lab for a while :
- http://docs.codehaus.org/display/GEOTDOC/06+CSV2SHP+Lab

Jody

Rodrigo Paes wrote:
>
> Hello,
>
>  
>
> I'm trying to save a shapefile from a MemoryDataStore.
>
> The shapefile seems to be ok, however it is not saving the .prj file 
> properly, when I open it, it is empty (0 bytes).
>
>  
>
> When I call the createSchema(), I'm getting the following warning: 
> "PRJ file not generated for null CoordinateReferenceSystem". Then I 
> tried some debugging and I have found out that this piece of code 
> found in class ShapeFileDataStore.java is throwing an exception:
>
> *if* (cs != *null*) {
>
>                 *try* {
>
>                     transformedBounds = env.transform(cs, *true*); <<- 
> exception happens here
>
>                 } *catch* (Exception e) {
>                                             cs = null;
>                                            transformedBounds = env;
>                                 }
>
>  
>
> Please, help.
>
>  
>
>  
>
> This is the message of the exception that is being caught in the 
> ShapeFileDataStore.java:
>
> org.geotools.referencing.operation.projection.ProjectionException: The 
> transform result may be 111.319,871 meters away from the expected 
> position. Are you sure that the input coordinates are inside this map 
> projection area of validity? The point is located 0°00.0'E away from 
> the central meridian and 90°00.0'S away from the latitude of origin. 
> The projection is "Transverse_Mercator"
>
>  
>
>  
>
> This is a println of the CRS of my GeometryDescriptor:
>
>  
>
> PROJCS["SAD_1969_UTM_Zone_23S",
>
>   GEOGCS["GCS_South_American_1969",
>
>     DATUM["D_South_American_1969",
>
>       SPHEROID["GRS_1967_Truncated", 6378160.0, 298.25]],
>
>     PRIMEM["Greenwich", 0.0],
>
>     UNIT["degree", 0.017453292519943295],
>
>     AXIS["Longitude", EAST],
>
>     AXIS["Latitude", NORTH]],
>
>   PROJECTION["Transverse_Mercator"],
>
>   PARAMETER["central_meridian", -45.0],
>
>   PARAMETER["latitude_of_origin", 0.0],
>
>   PARAMETER["scale_factor", 0.9996],
>
>   PARAMETER["false_easting", 500000.0],
>
>   PARAMETER["false_northing", 10000000.0],
>
>   UNIT["m", 1.0],
>
>   AXIS["x", EAST],
>
>   AXIS["y", NORTH]]
>
>  
>
>  
>
> This is the code:
>
>  
>
> FeatureSource<SimpleFeatureType, SimpleFeature> memoryFeatureSource = 
> getFeatureSource();
>
>             SimpleFeatureType featureType = 
> memoryFeatureSource.getSchema();
>
>  
>
>             File file = *new* File(getFileName());
>
>             Map map = Collections./singletonMap/("url", 
> file.toURI().toURL());
>
>             FileDataStoreFactorySpi factory = *new* 
> ShapefileDataStoreFactory();
>
>             ShapefileDataStore shapeFileDataStore = 
> (ShapefileDataStore) factory
>
>                         .createNewDataStore(map);
>
>            
>
>             shapeFileDataStore.createSchema(featureType);
>
> FeatureStore shapeFileFeatureStore = (FeatureStore) shapeFileDataStore
>
>                                                 
> .getFeatureSource(featureType.getName());
>
>  
>
>                         Transaction t = new DefaultTransaction();
>
>                         try {
>
>                                     Map features = 
> memory.getFeatures(featureType.getTypeName());
>
>                                     FeatureCollection collection = 
> FeatureCollections.newCollection();
>
>                                     collection.addAll(features.values());
>
>                                     
> shapeFileFeatureStore.addFeatures(collection);
>
>                                     t.commit(); // write it out
>
>                         } catch (IOException eek) {
>
>                                     eek.printStackTrace();
>
>                                     try {
>
>                                                 t.rollback();
>
>                                     } catch (IOException doubleEeek) {
>
>                                                 // rollback failed?
>
>                                     }
>
>                         } finally {
>
>                                     t.close();
>
>                         }
>
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