> Now I am thinnking Where to start? Yes this is the joy of programming :-)
> I mean If I add an extra layer (polygon layer) using uDig and once I save > the layer then it wil be stored as a .shp file. is it the proper way to > store layer into database? Have a look in the tutorials folder where there is an operation to export a shapefile; you can modify this same approach to export to a postgis table. I have done this for customers twice now; but so far it has not made it back into udig core. Strictly as a user: you can also use the "create type" operation to make a new postgis table; and then copy and paste data into the table. > Otherwise will I need to store as a polygons into the database,and again > where can I get these polygon values in to my uDig program? please take me > through right way.. You can perform a query against a layer: 1. resolve the layer to a FeatureSource 2. featureSource.getFeatures( filter ) will give you a FeatureCollection 3. go through the feature collection to get the features 4. each feature has attributes; one or more of which will by a geometry (ie a polygon?) I think this may also be covered by a code example: - http://udig.refractions.net/confluence/display/DEV/1+Code+Examples _______________________________________________ User-friendly Desktop Internet GIS (uDig) http://udig.refractions.net http://lists.refractions.net/mailman/listinfo/udig-devel
