Hi Stefan, i'am right, that you are looking for a possibility to handle SRID's for FC/Layer? The same problem do we have in the measurement tools. Here we need an information about the coordinate system/projection too. We had discussed this partially in the past. I mean that every FC/Layer should now their own SRID. For some datasources we get this information from the data (PostGIS, Shape -> .prj file, GML...) But we should not do an automatic coordinate system transformation! The user should get an hint if he tries to load layers with different coordinate systems. The user have to take care that he use only data within the same coordinate system. Some people like OJ because it is the only tool which leaves the data untouched. On the other hand in some use cases exists special customized transformations between two coordinate systems. For example in germany for the switch of the government data to ETRS89 .
regards Matthias > Hi - and I guess - in particular this goes to Michael and Martin, > > So I was thinking yesterday that the SRID for OSM data is fix (EPSG:4326 > [1]) and wanted to set it for the FeatureDataset. Except the FC/FD does > not have such property. > > What I found: > in the DataSource.getConnection() and executeQueryString() the advise > that callers should make sure to call DataSource#setCoordinateSystem on > the returned FeatureCollection. > > Now looking into DataSource class there is also a method > installCoordinateSystem() that refers to > com.vividsolutions.jump.coordsys.CoordinateSystemRegistry > and a key for the properties map. > So the installCoordinateSystem() requires to provide some registry code > (as String), which could be the SRID. But well, there should be nothing > in the registry as we never filled it - or do we? And what would it return? > > Any advise what to do, i.e. how to set the SRID for the FC/Layer? Does > give me browsing the PostGIS code an idea? Or should I add the SRID to > each geometry? > > cheers, > stefan > > [1] http://wiki.openstreetmap.org/wiki/Projection > > ------------------------------------------------------------------------------ > Get 100% visibility into Java/.NET code with AppDynamics Lite! > It's a free troubleshooting tool designed for production. > Get down to code-level detail for bottlenecks, with <2% overhead. > Download for free and get started troubleshooting in minutes. > http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk > _______________________________________________ > Jump-pilot-devel mailing list > Jump-pilot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel -- _ __ ___ _________________________________ ___ __ _ Technologieconsulting Matthias Scholz Siebigeröder Str 17a 06308 Klostermansfeld T +49 34772 34150 E m...@jammerhund.de W www.openjump.de _ __ ___ _________________________________ ___ __ _ ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite! It's a free troubleshooting tool designed for production. Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk _______________________________________________ Jump-pilot-devel mailing list Jump-pilot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
