From: Greg E. <gr...@er...> - 2009-01-14 20:49:04
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Hi, I found the answer to my own question: CRSAuthorityFactory factory = ReferencingFactoryFinder.getCRSAuthorityFactory("EPSG", null); CoordinateReferenceSystem crs = factory.createCoordinateReferenceSystem("4326"); Thanks! Greg On Jan 14, 2009, at 12:40 PM, Greg Ederer wrote: > Hi, > > I am reading a shapefile using the following code from the User Guide: > > File file = new File("/Users/gregederer/servers/geoserver_data/data/ > shapefiles/gaul/Africa/g2008_1.shp");//getShapeFile(args); > > ShapefileDataStore shapefile = new > ShapefileDataStore(file.toURL()); > String typeName = shapefile.getTypeNames()[0]; > FeatureSource featureSource = shapefile.getFeatureSource(); > FeatureType schema = featureSource.getSchema(); > CoordinateReferenceSystem crs = > schema.getGeometryDescriptor().getCoordinateReferenceSystem(); > > MapContext map = new DefaultMapContext(crs); > Style style = createStyle(file, schema); > map.addLayer(featureSource, style); > > showMap(map); > > in showMap(): > > final JMapPane mapPane = new JMapPane(new StreamingRenderer(), > map); > mapPane.setMapArea(map.getLayerBounds()); > > When I run this code against my shapefile, I get: > > Exception in thread "main" java.io.IOException: CRS of this map > context is null. Unable to get bounds. > at > org > .geotools.map.DefaultMapContext.getLayerBounds(DefaultMapContext.java: > 544) > at org.esv.SummaryStats.ShapeLab.showMap(ShapeLab.java:187) > at org.esv.SummaryStats.ShapeLab.main(ShapeLab.java:75) > > Is it possible that this shapefile has no CRS? If so, is there a > factory method that I can use to get the required > CoordinateReferenceSystem reference? I happen to know that this > particular shapefile is in ESPG:4326. What other parameters will I > need? > > Thanks! > > Greg > > ------------------------------------------------------------------------------ > This SF.net email is sponsored by: > SourcForge Community > SourceForge wants to tell your story. > http://p.sf.net/sfu/sf-spreadtheword > _______________________________________________ > Geotools-gt2-users mailing list > Geo...@li... > https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users |