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Convert GML to DXF using ogr2ogr

Convert GML to DXF using ogr2ogr


I cannot make ogr2ogr.exe work. I'm using GDAL 1.11.

I keep getting the following error message:

ERROR 1: Did not get at least 2 values or invalid number of set of coordinates 709993.98 6181946.65 32.36 709990.65 6181946.07 32.36 709992.47 6181935.8 32.36 709995.78 6181936.38 32.36 709993.98 6181946.65 32.36 ERROR 1: Invalid exterior ring

I run the following command:

C:Python34Libsite-packagesosgeoogr2ogr.exe -skipfailures -nlt MULTILINESTRING25D -dim 3 -f "DXF" -a_srs "EPSG:25832" -spat 711000 6168300 713000 6168600 -geomfield posList bygning.DXF Bygning.gml

I'm working on a relatively big file 4.2GB.

UPDATE: Example of data to import

       710820.22 6180637.52 36 710818.14 6180633.83 36 710825.47 6180629.71 36 710827.55 6180633.4 38.25 710828.6 6180637.3 38.25 710825.18 6180638.36 38.25 710824.22 6180635.27 36 710820.22 6180637.52 36 

Does the GML3 driver in org2ogr support surfaces?

UPDATE 2 - making it simple

I tried making a gml consisting of only one feature, same namespace etc. as before. I then output the feature to WKT.

Output WKT

"POLYGON ((711383.39 6182528.23,36.49 711379.31,6182528.35 36.48,711379.06 6182520.08,36.48 711383.15,6182519.97 36.48,711383.37 6182527.56,36.49 711383.39,6182528.23 36.49))"

Input GML http://pastebin.com/76AGLWH0

Cleary the commas is placed in the wrong positions. The z-coordinate of the first point is parsed as the x-coordinate of the second feature. If I add -dim 3 or -nlt GEOMETRY, it adds zeroes.

BR Thomas


The problem is caused by GDAL which seems to require that 3-dimensional coordinates are specified in GML at position level as

In the data dimensions are expressed only at geometry level

This may be a bug or missing feature in GDAL and corresponding GDAL ticket http://trac.osgeo.org/gdal/ticket/5606 will show the resolution. First aid for making the data readable for GDAL is to add srsDimensions attribute to occasions of "posList" with a text editor.

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Watch the video: Spatial File Format conversion using OGR2OGR. GDALOGR Tutorial