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Hi Paul,<br>
<br>
To be complete: the ogr2ogr, is the command used by QGIS.<br>
<br>
I just tried saving a 3D point shapefile to dxf using the layer
"Save As" command.<br>
The resulting dxf is perfectly 3D. <br>
<br>
So, 3D point shapefiles seem to be very well managed in QGIS, at
least for the "save as" command. <br>
<br>
Regards,<br>
<br>
Paul<br>
<br>
<div class="moz-cite-prefix">Le 19/04/2013 9:43, Paul Lens a écrit :<br>
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Hi,<br>
<br>
I do'nt know about converting a 3D csv to a shapefile.<br>
<br>
About converting shp to dxf 3D, I see in my notes that ogr2ogr can
export Z values to a dxf file.<br>
It works fine for points. <br>
For polylines, it just saves one Z value per polyline, thus for
the whole polyline not per vertex.<br>
gvSig is able to save polylines to dxf with Z values per vertex. <br>
I do not know how the grass command "v.out.dxf" exports 3D
shapefiles. <br>
<br>
Hope this helps,<br>
<br>
Paul<br>
<br>
<div class="moz-cite-prefix">Le 18/04/2013 10:49, Paul Haakma a
écrit :<br>
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<div>Hi All<br>
<br>
</div>
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?<br>
<br>
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.<br>
<br>
</div>
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.<br>
<br>
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Any ideas?<br clear="all">
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<div><br>
-- <br>
-Paul </div>
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