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Re: [Geotools-gt2-users] Argument "sourceCRS" should not be null.
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From: Jody G. <jod...@gm...> - 2011-03-13 02:00:56
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I really have to ask you to email the user list :-) That way others can help.
You have fallen into the axis order problem. Where GIS systems assume longitude / latitude order - but us computer science guys assume x/y order.
For more information please review the tutorial I sent earlier. Near the bottom is a single line "fix".
System.setProperty("org.geotools.referencing.forceXY", "true");
I would need to check on rates, for the complete list of those offering commercial support:
- http://docs.geotools.org/latest/userguide/guide/welcome/support.html
I would recommend someone in your timezone for prompt service.
--
Jody Garnett
On Sunday, 13 March 2011 at 3:49 AM, Rajkumar wrote:
> Hi Jody,
>
> Greetings. Thanks for your help. Once I added SRID, I am getting the
> image, but layers are not aligned properly.
>
>
> SimpleFeatureType TYPE = DataUtilities.createType("Airports",
> "shape:Geometry:srid=4269,name:String"); // 4269
>
> Regarding for the Data CoordinateReferenceSystem:
>
> CRS defs :GEOGCS["NAD83",
> DATUM["North American Datum 1983",
> SPHEROID["GRS 1980", 6378137.0, 298.257222101, AUTHORITY["EPSG","7019"]],
> TOWGS84[1.0, 1.0, -1.0, 0.0, 0.0, 0.0, 0.0],
> AUTHORITY["EPSG","6269"]],
> PRIMEM["Greenwich", 0.0, AUTHORITY["EPSG","8901"]],
> UNIT["degree", 0.017453292519943295],
> AXIS["Geodetic latitude", NORTH],
> AXIS["Geodetic longitude", EAST],
> AUTHORITY["EPSG","4269"]]
>
> For the MapPane CoordinateReferenceSystem is
>
> CRS defs :GEOGCS["GCS_North_American_1983",
> DATUM["D_North_American_1983",
> SPHEROID["GRS_1980", 6378137.0, 298.257222101]],
> PRIMEM["Greenwich", 0.0],
> UNIT["degree", 0.017453292519943295],
> AXIS["Longitude", EAST],
> AXIS["Latitude", NORTH]]
> The collection are 264
>
> Now I am getting two distinct locations, instead of the layers being
> overlaid. I have attached the screenshot of the image.
>
> How much LISAsoft will charge for developer support?
>
> Thanks
>
> Best Regards
> Rajkumar
>
>
>
> > Hi Rajkumar
> >
> > Welcome to GeoTools.
> >
> > The company I work for, LISAsoft, sells developer support allowing me to
> > answer direct emails, and fix bugs, promptly. If you email the geotools
> > user list you will find that both myself and others are around to try and
> > help.
> >
> > When projecting from one CRS to another ... you need to have two
> > coordinate reference systems, so your code is correct - your data is wrong
> > :-)
> >
> > I notice this line:
> >
> > > SimpleFeatureType TYPE = DataUtilities.createType("testtype",
> > > "shape:Geometry, name:String");
> >
> > you should change it to specify the spatial reference system used -
> > example "shape:Geometry:srid=4326"
> >
> > As shown in the javadocs:
> > http://docs.geotools.org/stable/javadocs/org/geotools/data/DataUtilities.html#createType(java.lang.String,%20java.lang.String)
> >
> > Ask your data provider what the coordinate reference system is. Many
> > organisations work with the same CRS all the time, and don't even both to
> > write it down in the file. There is a DefaultGeographicCRS.WGS84 for
> > lon/lat data for example.
> >
> > For more information please review the tutorial on the subject.
> > http://docs.geotools.org/latest/tutorials/geometry/geometrycrs.html
> > --
> > Jody Garnett
> >
> > On Saturday, 12 March 2011 at 12:37 AM, Rajkumar wrote:
> > >
> > >
> > > Hi Jody,
> > >
> > > Greetings. I am very new to geotools. Here is my code and when I try to
> > > click the mouse over a point, it is giving an exception.
> > >
> > > EVERE: It was not possible to get a projected bounds estimate
> > > Exception in thread "AWT-EventQueue-0" java.lang.IllegalStateException:
> > > java.lang.IllegalArgumentException: Argument "sourceCRS" should not be
> > > null.
> > > at org.geotools.swing.tool.InfoTool.onMouseClicked(InfoTool.java:178)
> > > at
> > > org.geotools.swing.tool.MapToolManager.mouseClicked(MapToolManager.java:132)
> > >
> > > Code:
> > >
> > >
> > > import com.vividsolutions.jts.geom.Geometry;
> > > import com.vividsolutions.jts.io.WKTReader;
> > > import java.awt.Color;
> > > import org.geotools.data.DataUtilities;
> > > import org.geotools.data.simple.SimpleFeatureCollection;
> > > import org.geotools.factory.CommonFactoryFinder;
> > > import org.geotools.feature.FeatureCollections;
> > > import org.geotools.feature.simple.SimpleFeatureBuilder;
> > > import org.geotools.map.DefaultMapContext;
> > > import org.geotools.map.MapContext;
> > > import org.geotools.referencing.crs.DefaultGeographicCRS;
> > > import org.geotools.styling.ExternalGraphic;
> > > import org.geotools.styling.FeatureTypeStyle;
> > > import org.geotools.styling.Graphic;
> > > import org.geotools.styling.PointSymbolizer;
> > > import org.geotools.styling.Rule;
> > > import org.geotools.styling.Stroke;
> > > import org.geotools.styling.Style;
> > > import org.geotools.styling.StyleBuilder;
> > > import org.geotools.styling.StyleFactory;
> > > import org.geotools.styling.Symbolizer;
> > > import org.geotools.swing.JMapFrame;
> > > import org.opengis.feature.simple.SimpleFeatureType;
> > > import org.opengis.filter.Filter;
> > > import org.opengis.filter.FilterFactory2;
> > > import org.opengis.filter.expression.Function;
> > >
> > >
> > >
> > >
> > > /*
> > > * Creates some features having either Point or LineString as the
> > > Geometry and displays them
> > > * in a single MapLayer
> > > */
> > > public class LinesAndPointsOrig {
> > >
> > > public static void main(String[] args) throws Exception {
> > > new LinesAndPointsOrig().displayFeatures();
> > > }
> > >
> > > private void displayFeatures() throws Exception {
> > > SimpleFeatureCollection features = createFeatureCollection();
> > > Style style = createStyle("shape");
> > > MapContext map = new DefaultMapContext(DefaultGeographicCRS.WGS84);
> > > map.addLayer(features, style);
> > > JMapFrame.showMap(map);
> > > }
> > >
> > > private SimpleFeatureCollection createFeatureCollection() throws
> > > Exception {
> > > SimpleFeatureCollection fc = FeatureCollections.newCollection();
> > > SimpleFeatureType TYPE = DataUtilities.createType("testtype",
> > > "shape:Geometry, name:String");
> > > SimpleFeatureBuilder fb = new SimpleFeatureBuilder(TYPE);
> > >
> > > Geometry g;
> > > WKTReader reader = new WKTReader();
> > >
> > > g = reader.read("POINT(1 1)");
> > > fc.add(fb.buildFeature(null, new Object[]{g, "p1"}));
> > >
> > > g = reader.read("POINT(2 2)");
> > > fc.add(fb.buildFeature(null, new Object[]{g, "p2"}));
> > >
> > > g = reader.read("POINT(3 3)");
> > > fc.add(fb.buildFeature(null, new Object[]{g, "p3"}));
> > >
> > > g = reader.read("POINT(4 4)");
> > > fc.add(fb.buildFeature(null, new Object[]{g, "p4"}));
> > >
> > > g = reader.read("LINESTRING(1 2, 4 5)");
> > > fc.add(fb.buildFeature(null, new Object[]{g, "line1"}));
> > >
> > > g = reader.read("LINESTRING(1 0, 4 3)");
> > > fc.add(fb.buildFeature(null, new Object[]{g, "line1"}));
> > >
> > > return fc;
> > > }
> > >
> > > private Style createStyle(String geomPropertyName) {
> > > // private Style createStyle() {
> > > StyleFactory sf = CommonFactoryFinder.getStyleFactory(null);
> > > FilterFactory2 ff = CommonFactoryFinder.getFilterFactory2(null);
> > >
> > > Rule pointRule = sf.createRule();
> > > Function getGeomFn = ff.function("geometryType",
> > > ff.property(geomPropertyName));
> > > Filter pointFilter = ff.equals(getGeomFn, ff.literal("Point"));
> > > pointRule.setFilter(pointFilter);
> > > pointRule.setElseFilter(false);
> > >
> > > Graphic graphic = sf.getDefaultGraphic();
> > > graphic.graphicalSymbols().clear();
> > > //ExternalGraphic external = sf.createExternalGraphic(
> > > "file:///C:/Users/rajkumar/riaexworkspace/metar/src/images/aircraftsmall.png",
> > > "image/gif");
> > >
> > > //ExternalGraphic eGr = sb.createExternalGraphic(SPRITE_IMAGE_URL,
> > > "image/png");
> > > //graphic.graphicalSymbols().add( eGr );
> > >
> > > // graphic.graphicalSymbols().add(sf.getCircleMark());
> > > graphic.graphicalSymbols().add(sf.getTriangleMark());
> > >
> > > //graphic.graphicalSymbols().add(external);
> > >
> > > Symbolizer sym = sf.createPointSymbolizer(graphic, geomPropertyName);
> > > // Symbolizer sym =sf.createPointSymbolizer(graphic,"");
> > > pointRule.symbolizers().add(sym);
> > >
> > > Rule lineRule = sf.createRule();
> > > lineRule.setIsElseFilter(true);
> > > Stroke stroke = sf.createStroke(ff.literal(Color.BLUE),
> > > ff.literal(1.0f));
> > > Symbolizer lineSym = sf.createLineSymbolizer(stroke,
> > > geomPropertyName);
> > > lineRule.symbolizers().add(lineSym);
> > >
> > > FeatureTypeStyle fts = sf.createFeatureTypeStyle(new
> > > Rule[]{pointRule, lineRule});
> > > Style style = sf.createStyle();
> > > style.featureTypeStyles().add(fts);
> > > return style;
> > > }
> > > }
> > >
> > > I greatly appreciate your help.
> > >
> > > Thanks
> > > Rajkumar
>
>
> --
> Rajkumar
> 408-306-8666
> RIAEX Inc. Sunnyvale
> CA
>
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