From 3d model to dxf (stucked)

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You have (finally) your 3D model (properly georeferenced and scaled) inside PhotoScan. Perfect.

Now, the idea is to trace the outlines of interest (Draw Polyline command) and then export all on a .dfx file (Shapes> Export Layers command).

Well... if you try to do that, polylines within the DXF go off the scale and measure strange values...

Where's the catch ?
 
Hi Pete,

I just tried this and got great results, all I can think of is that you have the wrong coordinate system when exporting.

Blake
 
The problem was the coordinate system :)

Since from PhotoScan I export a DEM and an orthophoto in WGS 84 (geographical coordinates) in QGIS I need to reproject these files in any plane coordinate system in order to have the correct measurements on the xy plane.
 

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