ORG reads incorrectly same content GML files

[duypl]

Hi,

I'm using OGR .NET binding version 1.9 to read and convert GIS files to GML. I download the OGR .NET from this link ​http://www.gisinternals.com/sdk/PackageList.aspx?file=release-1600-gdal-1-9-mapserver-6-0.zip

Recently, when using OGR to read two same GML files, I found a funny issue: the content of two GML files is the same except one file has new line and white space while other doesn't. Then the OGR reads them with totally different geometry type !. Below is the code I use to read GML file, the geoType variable will result two different value for two GML file although their content is the same

• For the file without any new line and white space: geoType = wkbGeometryType.wkbMultiPoint

• For the file with new line and white space: geoType = wkbGeometryType.wkbPoint

Is it a bug ?

using (var ds = Ogr.Open("data.gml", 0))
{
	using (var layer = ds.GetLayerByIndex(0))
	{
		Feature f = null;
		do
		{
			f = layer.GetNextFeature();
			if (f == null)
			{
				break;
			}

			using (f)
			using (var geometry = f.GetGeometryRef())
			{
				var geoType = geometry.GetGeometryType();
			}
		} while (f != null);
	}
}

Regards, Duy

[duypl]

GML file with new line and white space

[Jukka Rahkonen]

Is the first attached file "no-white-space.gml" perhaps wrong? It contains a LineString instead of point.

[Even Rouault]

I don't see any problems when reading those files. They are really different, not only by indendation, but also by content. The first one (no-white-space.gml) has indeed a LineString. And the second one (with-white-space.gml) a Point.

[duypl]

GML file with no new line and white space

[duypl]

I'm sorry. I uploaded to wrong file.

The new no-white-space.gml has been udpated again :)

[Jukka Rahkonen]

Ogrinfo gives similar report from both files with geometrytype Point. Result from these two commands are identical

ogr2ogr -f GML 1.gml no-white-space.gml 
ogr2ogr -f GML 2.gml with-white-space.gml 

Things does not seem to be very bad in general. I cannot say why your code gives different results. Obviously ogrinfo and ogr2ogr does not have the same problem. Tested with GDAL 1.9.0 binaries from gisinternals on Windows XP.

[Even Rouault]

I still don't see any issue. Works for me too.

Hum, just curious, don't you have any rogue .gfs near to your .gml files ? Or a .xsd ?

[duypl]

@rouault : yes, there are .xsd file near them. I double check again and found this is pretty confused but obviously this is not a bug of OGR. I have to exam them carefully to find the root cause

Sorry for this :)