[gdal-dev] ogr2ogr v1.10.1 and AIXM (issues with curves?)

[Jesse McGraw]

Well, that explains that one.  :)

I'm sure it must be the same story for the other files, various unsupported
GML features.  Is there any way to make ogr2ogr warn when it encounters
something it doesn't support versus silently creating blank geometry?

Out of curiosity, is more robust GML/AIXM support something that's of
general interest?  Is it widely used?




On Fri, May 16, 2014 at 2:44 PM, Even Rouault
<even.rouault at mines-paris.org>wrote:

> Le vendredi 16 mai 2014 20:18:22, Jesse McGraw a écrit :
> > GDAL gurus,
> >  I'm trying to use the AIXM files from the FAA (downloadable here:
> > https://nfdc.faa.gov/webContent/56DaySub/2014-05-29/aixm5.0.zip ) in
> QGIS
> > and I'm noticing that there are some that with no warnings or complaints
> > just don't produce a polygon. (ogrinfo says "POLYGON EMPTY")
> >
> > Two examples are "P-56B DISTRICT OF COLUMBIA.xml" and "POINSETT MOA,
> > SC.xml"
> >
> > Is there some command line incantation that I'm missing? Or perhaps this
> > is a feature of GML/AIXM that isn't supported?  I've read that there is
> > little or no GDAL support for curves/arcs though I'm unclear as to the
> > current status of that support.
>
> CircleByCenterPoint is not currently supported by the GML decoder.
>
> >
> > Here's a snippet from the P-56B file:
> > <horizontalProjection>
> >  <Surface gml:id="Surface1" srsDimension="2"
> > srsName="URN:OGC:DEF:CRS:OGC:1.3:CRS84">
> >   <patches>
> >    <PolygonPatch>
> >     <exterior>
> >      <Ring>
> >       <curveMember>
> >        <Curve ns:id="Curve1">
> >         <segments>
> >          <CircleByCenterPoint numArc="1">
> >           <pointProperty>
> >            <Point ns:id="Point_1">
> >             <pos>-77.066944 38.921389</pos>
> >             </Point>
> >            </pointProperty>
> >           <radius uom="NM">0.4</radius>
> >          </CircleByCenterPoint>
> >         </segments>
> >        </Curve>
> >       </curveMember>
> >      </Ring>
> >     </exterior>
> >    </PolygonPatch>
> >   </patches>
> >  </Surface>
> > </horizontalProjection>
> >
> > If I should be posting this somewhere else or filing a bug report/feature
> > request please let me know
>
> That could be worth one.
>
> >
> > Thanks!
> > -Jesse McGraw
>
> --
> Geospatial professional services
> http://even.rouault.free.fr/services.html
>
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