Re: [Geotools-gt2-users] Simple map with points

[Jody G. <jga...@re...>]

Sami Dalouche wrote:

>Hi,
>
>I tried the MemoryDataStore approach, but don't really understand the String I'm
>supposed to pass to getFeatureSource..Javadoc doesn't help me either...
>
>So, I tried the approach explained on :
>http://www.geotools.org/The+Map
>
>it does display points, but does not seem to display them where I expect them
>to.
>With the coordinates that appear here :
>Point point2 = geomFac.createPoint(new Coordinate(10.0, 10.0));
>are these coordinates supposed to be latitude / longitude ? If not, what is the
>way to specify latitudes / longitudes ?
>  
>
When you construct your FeaureType (of the feature you are about to add 
to the MemoryDataStore) be sure to include a valid 
CoordinateReferenceSystem object representing lat long - EPSG:4326 tends 
to work fine.  I think there is even a java constant somewhere around 
with this common value.

CoordainteReferenceSystem crs = CRS.decode("EPSG:4326);

You will need to assoicate this with your GeometryAttribute as the 
"metadata" paraemter provided to the FeatureTypeFactory.
Cheers,
Jody