I wrote a simple test application. Which I would like to render in
mercator projection.
But it does not do It!
I found US states map in geoserver installation (it consists of:
states.dbf, states.prj, states.shp, states.shx)
On this image: http://ds.azcltd.com/quickStart/compareProjectionsUSA.gif
you can see:
Left part - google map image
Middle part - my test program image if states.prj removed
Right part - my test program image if states.prj does NOT removed
My test application looks like this code:
===========================================================
public static void main(String[] args) throws Throwable {
//.... skipped JFrame initialization
//.... skipping grid features creation; they are created without CRS
ShapefileDataStore shapefileDataStore = new
ShapefileDataStore(new URL(QuickStart.class.getResource("/").toString()
+ "../resources/1/states.shp"));
Style style = //....skipped styles creation
MapContext map = new DefaultMapContext(getCRS());
map.addLayer(shapefileDataStore.getFeatureSource(shapefileDataStore.getTypeNames()[0]),
style);
map.addLayer(aFeatureCollection, aStyle); //this is a grid features
StreamingRenderer renderer = new StreamingRenderer();
renderer.setContext(map);
renderer.paint((Graphics2D) p.getGraphics(), new Rectangle(0, 0,
256, 256), new ReferencedEnvelope(new Envelope(-180, 0, 0,
85.0511287798066), getCRS()));
}
public static CoordinateReferenceSystem getCRS() throws Throwable {
String wkt1 = "<<--Skipped WKT of 900913 Google Mercator
projection you can find it in my previous post:
http://www.nabble.com/how-to-change-projection-td16494337.html-->>";
return CRS.parseWKT(wkt1);
}
===========================================================
I can not understand what can be wrong here. Projection file is not
modified. I've used it "as is". I'am starting to feel my self like an idiot!
Somebody, please, help me!
Can you find a error in 10 lines of code?
How can I get Google Mercator projection?
Regards,
Dennis
Andrea Aime wrote:
> The feature source should be true to the actual data srs. So in your
> case I guess it should be 4326. You can to fix your source data.
> What is it, shapefile, postgis?
>
> Cheers
> Andrea
>
>
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