I’ve written a script which deletes every nan line and it’s parent and I get 
this result:

Warning: Renaming lane ':4370284578_0_2' to ':4370284578_0_1'.
Warning: Renaming lane ':4370284578_0_3' to ':4370284578_0_2'.
Error: Unknown edge '-14' given in connection.
Error: Unknown edge '-28' given in connection.
Error: Unknown edge '-90' given in connection.
Error: Unknown edge '1' given in connection.
Error: Unknown edge '1' given in connection.
Error: Unknown edge '1' given in connection.
Error: Unknown edge '1' given in connection.
Error: Unknown edge '14' given in connection.
Error: Unknown edge '28' given in connection.
Error: Unknown edge '348' given in connection.
Error: Unknown edge '348' given in connection.
Error: Unknown edge '348' given in connection.
Error: Unknown edge '348' given in connection.
Error: Unknown edge '348' given in connection.
Error: Unknown edge '362' given in connection.
Error: Unknown edge '362' given in connection.
Error: Unknown edge '362' given in connection.
Error: Unknown edge '437' given in connection.
Error: Unknown edge '438' given in connection.
Error: Unknown edge '438' given in connection.
Error: Unknown edge '438' given in connection.
Error: Unknown edge '438' given in connection.
Error: Unknown edge '438' given in connection.
Error: Unknown edge '444' given in connection.
Error: Unknown edge '90' given in connection.
Error: Unknown edge ':251290603_0' given in connection.
Error: Unknown edge ':251290603_0' given in connection.
Error: Unknown edge ':251290603_0' given in connection.
Error: Unknown edge ':251290603_0' given in connection.
Error: Unknown edge ':251290603_0' given in connection.
Error: Invalid lane index '3' for connection from ':4370284578_0'.
done.
 Import done:
   52 nodes loaded.
   33 types loaded.
   3 edges loaded.
Error: Failed to build network.

I’ve also written a script which deletes every nan line, I get this result:

Warning: Renaming lane ':4370284578_0_2' to ':4370284578_0_1'.
Warning: Renaming lane ':4370284578_0_3' to ':4370284578_0_2'.
Error: Invalid lane index '0' for connection from '-14'.
Error: Invalid lane index '0' for connection from '-28'.
Error: Invalid lane index '0' for connection from '-90'.
Error: Invalid lane index '0' for connection from '1'.
Error: Invalid lane index '1' for connection from '1'.
Error: Invalid lane index '1' for connection from '1'.
Error: Invalid lane index '1' for connection from '1'.
Error: Invalid lane index '0' for connection from '14'.
Error: Invalid lane index '0' for connection from '28'.
Error: Invalid lane index '0' for connection from '348'.
Error: Invalid lane index '1' for connection from '348'.
Error: Invalid lane index '2' for connection from '348'.
Error: Invalid lane index '2' for connection from '348'.
Error: Invalid lane index '2' for connection from '348'.
Error: Invalid lane index '0' for connection from '362'.
Error: Invalid lane index '1' for connection from '362'.
Error: Invalid lane index '1' for connection from '362'.
Error: Invalid lane index '0' for connection from '437'.
Error: Invalid lane index '0' for connection from '438'.
Error: Invalid lane index '1' for connection from '438'.
Error: Invalid lane index '1' for connection from '438'.
Error: Invalid lane index '1' for connection from '438'.
Error: Invalid lane index '1' for connection from '438'.
Error: Invalid lane index '0' for connection from '444'.
Error: Invalid lane index '0' for connection from '90'.
Error: Invalid lane index '0' for connection from ':251290603_0'.
Error: Invalid lane index '1' for connection from ':251290603_0'.
Error: Invalid lane index '2' for connection from ':251290603_0'.
Error: Invalid lane index '3' for connection from ':251290603_0'.
Error: Invalid lane index '4' for connection from ':251290603_0'.
Error: Invalid lane index '3' for connection from ':4370284578_0'.
done.
Error: Edge '-14' needs at least one lane.
Error: Failed to build network.

I also tried changing nan to an integer, for example 5, this time the network 
imports as the first image that I have attached. 

Regards,


> On 5 Oct 2021, at 12:20, Jakob Erdmann <[email protected]> wrote:
> 
> Your input contains plenty of invalid data (i.e. <tag k="maxspeed" v="nan" />)
> If you remove all the "nan" lines, all edges are imported.
> 
> Am Mo., 4. Okt. 2021 um 14:02 Uhr schrieb Toprak Fırat 
> <[email protected] <mailto:[email protected]>>:
> Hello,
> 
> After I download an osm file from open street map, edit and split the traffic 
> network into smaller subnetworks, I save the subnetworks as .osm files, using 
> osmnx and python. 
> 
> However when I use the netconvert function 
> 
> netconvert --osm-files map.osm --output-file map.net.xml
> 
> or
> 
> netconvert --osm-files map.osm --output-file map.net.xml --geometry.remove 
> --roundabouts.guess --ramps.guess --junctions.join --tls.guess-signals 
> --tls.discard-simple --tls.join
> 
> and I open the the .net.xml file on Netedit or Sumo-Gui, some roads doesn’t 
> appear even though I’m confident that the file is alright because when I load 
> the saved .osm file and plot it on python there is no problem. 
> 
> I also tried importing .osm directly using the import foreign network 
> function, but I still have the same result.
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