RE: [Geopriv] specifying holes in polygons

From: Winterbottom, James ^lt;James.Winterbottom@andrew.com>
Date: Sun Feb 11 2007 - 04:43:15 EST

Thanks a lot Carl. Henning, I think that these we would be very good examples to add to an appendix of your LoST server file protocol exchange draft. They explain how people such as Michael Haberler can represet holes in their polygon definitions. Cheers James > -----Original Message----- > From: Carl Reed OGC Account [mailto:creed@opengeospatial.org] > Sent: Sunday, 11 February 2007 12:13 PM > To: Winterbottom, James; ECRIT; GEOPRIV WG > Subject: Re: [Geopriv] specifying holes in polygons > > James - > > Here is an example. Hope the formatting stays OK! > > Please note that the coordinates do not need to be specified one > coordinate > pair per line. You can use gml:poslist to put all coordinates on the same > line for an element (<gml:posList>12 4.... </gml:posList> tag). > > Cheers > > Carl > > > <gml:Polygon> > > <gml:exterior> > > <gml:LinearRing> > > <gml:pos>-117.589 34.127</gml:pos> > > <gml:pos>-117.526 34.127</gml:pos> > > <gml:pos>-117.526 34.082</gml:pos> > > <gml:pos>-117.589 34.082</gml:pos> > > </gml:LinearRing> > > </gml:exterior> > > <gml:interior> > > <gml:LinearRing> > > <gml:pos>-117.576 34.122</gml:pos> > > <gml:pos>-117.559 34.122</gml:pos> > > <gml:pos>-117.559 34.107</gml:pos> > > <gml:pos>-117.576 34.107</gml:pos> > > </gml:LinearRing> > > </gml:interior> > > <gml:interior> > > <gml:LinearRing> > > <gml:pos>-117.559 34.107</gml:pos> > > <gml:pos>-117.541 34.107</gml:pos> > > <gml:pos>-117.541 34.09</gml:pos> > > <gml:pos>-117.559 34.09</gml:pos> > > </gml:LinearRing> > > </gml:interior> > > </gml:polygon> > > ----- Original Message ----- > From: "Winterbottom, James" <James.Winterbottom@andrew.com> > To: "Carl Reed OGC Account" <creed@opengeospatial.org>; "ECRIT" > <ecrit@ietf.org>; "GEOPRIV WG" <geopriv@ietf.org> > Sent: Friday, February 09, 2007 2:27 PM > Subject: RE: [Geopriv] specifying holes in polygons > > > > Hi Carl, > > > > Thanks for the offer. I was aware that GML could do it, and basically > > how. > > But if you example snippets that will save me from going and producing > > some. > > > > Thanks > > James > > > >> -----Original Message----- > >> From: Carl Reed OGC Account [mailto:creed@opengeospatial.org] > >> Sent: Saturday, 10 February 2007 5:21 AM > >> To: Winterbottom, James; ECRIT; GEOPRIV WG > >> Subject: Re: [Geopriv] specifying holes in polygons > >> > >> GML already supports the ability to identify exterior and interior > >> boundaries. > >> > >> " > >> <Interior> elements (also known as island, holes, or doughnuts) can > > also > >> be > >> expressed using GML. Interior elements can be expressed using: > >> > >> > >> > >> <element ref="gml:interior" minOccurs="0" maxOccurs="unbounded" />" > >> > >> > >> > >> I can provide example snippets if desired. > >> > >> > >> Carl > >> > >> > >> > >> > >> > >> ----- Original Message ----- > >> From: "Winterbottom, James" <James.Winterbottom@andrew.com> > >> To: "ECRIT" <ecrit@ietf.org>; "GEOPRIV WG" <geopriv@ietf.org> > >> Sent: Wednesday, February 07, 2007 10:29 PM > >> Subject: [Geopriv] specifying holes in polygons > >> > >> > >> > Hi All, > >> > > >> > I was updating the PIDF-LO profile draft when it occurred to me that > > we > >> > do not have any examples of how one might specify holes in a > > polygon. > >> > When you are specifying your own location, as is likely to be the > > case > >> > with a PIDF-LO, I am not convinced that this is a terribly useful > > thing > >> > to be able to do. When specifying a service boundary map I can see > > that > >> > it may be an essential thing to do. > >> > > >> > For example, I want to specify the boundary for Italy, but I want to > >> > exclude the Vatican. This would be a hole. > >> > > >> > I considered putting this an appendix to PIDF-LO profile, but I > > think > >> > that it would be more useful in a document that talks about > > specifying > >> > service map boundaries and the associated schema for these > > interchanges. > >> > The closest document that I could find was > >> > draft-schulzrinne-ecrit-lost-sync-00.txt. > >> > > >> > I would be interested in hearing what the rest of the community > > thought > >> > on this idea. > >> > > >> > Cheers > >> > James > >> > > >> > > > ------------------------------------------------------------------------ > >> ------------------------ > >> > This message is for the designated recipient only and may > >> > contain privileged, proprietary, or otherwise private information. > >> > If you have received it in error, please notify the sender > >> > immediately and delete the original. Any unauthorized use of > >> > this email is prohibited. > >> > > > ------------------------------------------------------------------------ > >> ------------------------ > >> > [mf2] > >> > > >> > > >> > _______________________________________________ > >> > Geopriv mailing list > >> > Geopriv@ietf.org > >> > https://www1.ietf.org/mailman/listinfo/geopriv > >> > > >> > > > > ------------------------------------------------------------------------ > ------------------------ > > This message is for the designated recipient only and may > > contain privileged, proprietary, or otherwise private information. > > If you have received it in error, please notify the sender > > immediately and delete the original. Any unauthorized use of > > this email is prohibited. > > ------------------------------------------------------------------------ > ------------------------ > > [mf2] > > > > > ------------------------------------------------------------------------------------------------ This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information. If you have received it in error, please notify the sender immediately and delete the original. Any unauthorized use of this email is prohibited. ------------------------------------------------------------------------------------------------ [mf2]

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Received on Sun, 11 Feb 2007 03:43:15 -0600

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