Ivan Boldyrev ha scritto: > On Tue, Nov 17, 2009 at 12:56 PM, Andrea Aime <aa...@opengeo.org > <mailto:aa...@opengeo.org>> wrote: > > The EPSG database in fact contains no definition of equidistant > conic projections. > > > Yes, but ESRI database contains, and I could use ESRI reference codes > within applications. My paramount goal is to display whole-Russia > geology map, and there is ESRI:102026 /Asia North Equidistant Conic/; > the problem is that territory of Russia is crossed by 180th meridian, > and is displayed by many GIS software incorrectly in universal > projections (I also see you are discussing this problem).
Well, the referencing system itself can deal with ESRI codes, the main likely issue I see is that, I believe, we cannot ship with a full ESRI definitions database. I mean, everybody can take it out of an ESRI installation, but redistributing it is probably going to violate their licensing terms. > Actually, bit another projection is used in practice (different central > meridian, centered against Russia), but this is minor detail. At least > I can read the data :) > > Perhaps, our organization will suggest adding Equdistant Conic and some > of its CRSes to ESPG database. > > > Yet one can still use it by building a CRS by code or by creating a > WKT spec for it and have the referencing subsystem parse it. > > > I have managed to add fake ESPG code to Geoserver database (I haven't > managed to add as true ESRI code), and it seems to work. After some > extra testing I will send a patch for GeoTools within a day or too. Right, GeoServer has been built with only the EPSG database in mind and there are assumptions that the codes come from that database in various parts. To locate them we'd need someone to try remove the limitation, use ESRI codes, and see where the code breaks. Would require some time and needs to be done for all protocols. I have some ideas where some of the assumptions are, if you are interested in trying to amend the GS code drop me a note. Cheers Andrea -- Andrea Aime OpenGeo - http://opengeo.org Expert service straight from the developers. ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Geotools-devel mailing list Geotools-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geotools-devel
