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 _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev