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Here is another workflow, using ogr2ogr with GCP points: Extract the lines as svg (as above) load into inkscape and save as dxf Load into QGIS, with EPSG:31467 as CRS Read a couple of coordinates from significant edges of the surrounding city border Open OSM editor JOSM and download the relation 62591 of the city border Save that as GPX Load the border ...


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You can use a free utility (Dxf2xyz 2.0, downloadable from http://www.guthcad.com/freestuff.htm) to convert from both dwg and dxf files to an "xyz" file, i.e. a comma delimited text file containing xyz coordinates. Then you need to change the extension file from ".xyz" to ".txt", before you load the xyz file in QGIS by the button "Add delimited text layer". ...


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I stumbled upon your question while trying to do the same thing, here's how I did it: Software used: Inkscape QGIS 2.2 Affine Transformation plugin for QGIS (required some modification, as the number fields didn't allow for enough digits and/or precision) Extracting vector data from PDF It's what you have already done, basically just open the PDF in ...


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If you want to get a 3D DXF from a SHP (SHPfile generated from DTM with Qgis-Processing-Tools-GDAL/OGR Extraction-Contour), you must: 1) have column with Z values into Table attributes of SHP. 2) open "OSGeo4W Shell Commands" if you have Windows OS. 3) write into shell for example: ogr2ogr -f "dxf" d:\Temp\3Doutput.dxf d:\Temp\contour.shp -zfield ELEV ...


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I have another question, actually after import 3D dxf file , it doesn't have any Z attribute . thanks for your help in advance.



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