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. 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 Thanks! -Jesse McGraw
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