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I'm working in AutoCAD with a layer from a shapefile.

The problem occurs when Autocad opens the file : the coordinates are the same than in QGIS, but when I try to draw a line 1 meter is 0,00001 in autocad.

I do not know how to get it in a workable scale. I saw similar questions, and tried to apply the solutions shown (modify CRS,...), but them didn't work. I am working with a coordinate system (WGS84)

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You are working in a system that uses angular units (i.e EPSG 4326 WGS84 Lat long system). One meter must be around 0,00001°, that's why you have so small values in Autocad.

You need to put your shapefile data "flat" in a meter unit projection within QGIS (for example to your local projection or UTM zone) by saving as and choosing the right projection. Depending on your location, we can help you choose one. Then you just need to export from QGIS in DXF.

Export DXF

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Autocad use cartesian coordinates. Export in UTM or your local system cartesian.

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AutoCAD use cartesian coordinates? No my friend, sorry - only AutoCAD Civil 3D use this. So, what you can to do is convert the file to a UTM or local system by using AutoCAD Civil 3D.

(In Settings) File name > Edit drawing settings> Categories...

  • AutoCAD ever use cartesian coordinates: relative or absolute x, y, z. AutoCAD Civil suport CRS – Javier Chinchilla Aug 19 '17 at 13:52

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