Well, it's a valid geometry type in JTS, so it should work in OJ. There may be limitations in how it can be manipulated, however - e.g. I suspect that it can't be edited (or at least that if it is it will revert to a plain ol LineString).
If this is a concern, another option is to load LinearRings as LineStrings. They should NOT be loaded as Polygons - LinearRings are not areas. Sunburned Surveyor wrote: > Martin, > > Is that a valid feature geometry type in OpenJUMP? I didn't know that > it was. If it is, then this probably is a bug that needs to get fixed. > > SS > > On Thu, Nov 20, 2008 at 9:06 AM, Martin Davis <[EMAIL PROTECTED]> wrote: > >> Why not read the GML LinearRing into a JTS LinearRing? >> >> Sunburned Surveyor wrote: >> >>> Well, it seems from a "robustness" perspective that it would be good >>> to read in linear rings, even if they are always represented >>> internally and exported as polygons. >>> >>> I will wait for other programmers to comment on what they think the >>> best course is, then I will implement the needed changes. >>> >>> SS >>> >>> On Thu, Nov 20, 2008 at 8:38 AM, Andreas Schmitz <[EMAIL PROTECTED]> wrote: >>> >>> >>>> Sunburned Surveyor wrote: >>>> >>>> Hi, >>>> >>>> >>>> >>>>> I'm working on one of the OJ 1.2 bugs I selected for squishing and I >>>>> had a quick question. >>>>> >>>>> Is the GML reader in OpenJUMP supposed to read features represented by >>>>> a LinearRing? I thought a LinearRing was only used as an exterior or >>>>> interior boundary of a polygon. A user filed a bug report because a >>>>> feature geometry wasn't created from a LinearRing using JUMP's >>>>> GMLReader. But I'm thikning that this isn't a bug, but an improper >>>>> understanding of how feature geometries are represented in GML. A >>>>> feature should be represented by a polygon, not a linear ring. >>>>> >>>>> If GMLReader is supposed to construct a feature goemetry (polygon?) >>>>> from a linear ring, then I'll fix the bug. If GMLReader is not >>>>> supposed to do this, because it isn't the proper way to represent a >>>>> feature, then I will close the bug. >>>>> >>>>> >>>> I think in GML2 this is allowed: >>>> >>>> http://schemas.opengis.net/gml/2.1.2/geometry.xsd >>>> >>>> One can always wonder why anyone would want it, but some people apparently >>>> have >>>> use cases for everything... The problem that is inherent here is, if you >>>> read >>>> the linear ring in as a polygon, what happens when exporting as GML again? >>>> Will >>>> it be exported as polygon or as linear ring? Is every linear ring also a >>>> polygon? I suppose not, as there are almost no restrictions on the form of >>>> a >>>> linear ring, but many (such as orientation of the rings, self intersections >>>> etc.) on polygons. >>>> >>>> I'm unsure on how to solve this problem though, the better you want to >>>> solve it, >>>> the more work it is obviously. >>>> >>>> Best regards, Andreas >>>> -- >>>> l a t / l o n GmbH >>>> Aennchenstrasse 19 53177 Bonn, Germany >>>> phone ++49 +228 18496-12 fax ++49 +228 1849629 >>>> http://www.lat-lon.de http://www.deegree.org >>>> >>>> -----BEGIN PGP SIGNATURE----- >>>> Version: GnuPG v1.4.9 (GNU/Linux) >>>> >>>> iEYEARECAAYFAkklkpUACgkQ737OVr+Ru7pgtACg5bMBBMLlo3wNsiXw7D+BB0tz >>>> OG8AoJc+QpDAnPZ2NTA+K//fxBcsCHI7 >>>> =9hXg >>>> -----END PGP SIGNATURE----- >>>> >>>> ------------------------------------------------------------------------- >>>> This SF.Net email is sponsored by the Moblin Your Move Developer's >>>> challenge >>>> Build the coolest Linux based applications with Moblin SDK & win great >>>> prizes >>>> Grand prize is a trip for two to an Open Source event anywhere in the world >>>> http://moblin-contest.org/redirect.php?banner_id=100&url=/ >>>> _______________________________________________ >>>> Jump-pilot-devel mailing list >>>> Jump-pilot-devel@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel >>>> >>>> >>>> >>>> >>> ------------------------------------------------------------------------- >>> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge >>> Build the coolest Linux based applications with Moblin SDK & win great >>> prizes >>> Grand prize is a trip for two to an Open Source event anywhere in the world >>> http://moblin-contest.org/redirect.php?banner_id=100&url=/ >>> _______________________________________________ >>> Jump-pilot-devel mailing list >>> Jump-pilot-devel@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel >>> >>> >>> >> -- >> Martin Davis >> Senior Technical Architect >> Refractions Research, Inc. >> (250) 383-3022 >> >> >> ------------------------------------------------------------------------- >> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge >> Build the coolest Linux based applications with Moblin SDK & win great prizes >> Grand prize is a trip for two to an Open Source event anywhere in the world >> http://moblin-contest.org/redirect.php?banner_id=100&url=/ >> _______________________________________________ >> Jump-pilot-devel mailing list >> Jump-pilot-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel >> >> > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > Jump-pilot-devel mailing list > Jump-pilot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel > > -- Martin Davis Senior Technical Architect Refractions Research, Inc. 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