[Qgis-user] csv point file to dxf

[Paul Lens]

Hi,

I do'nt know about converting a 3D csv to a shapefile.

About converting shp to dxf 3D, I see in my notes that ogr2ogr can 
export  Z values to a dxf file.
It works fine for points.
For polylines, it just saves one Z value per polyline, thus for the 
whole polyline not per vertex.
gvSig is able to save polylines to dxf with Z values per vertex.
I do not know how the grass command  "v.out.dxf" exports 3D shapefiles.

Hope this helps,

Paul

Le 18/04/2013 10:49, Paul Haakma a écrit :
> Hi All
>
> Can anyone advise on a way to import an 'x,y,z' csv point file and 
> then export those points to a dxf retaining the elevation (z) data?
>
> I've seen several comments on the web saying that QGIS doesn't export 
> vector elevation data, but then I discovered that the following *does* 
> work: start with a 3d dxf (e.g. points that have x,y,z coordinates), 
> import, save as a shapefile, re-import that shapefile and re-export as 
> a new dxf. The resulting dxf still has the z data.
>
> This demonstrates that QGIS has the ability to create and read a 2.5D 
> shapefile, and also read and create a 3d dxf, I just can't seem to 
> achieve this when starting with a simple csv file.
>
> Any ideas?
>
> -- 
> -Paul
>
>
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