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Re: [sumo-user] Programmatic Access to NETEDIT
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These are the geometry coordinates that make up the shape of the edge. The shape of the lanes in the .net.xml are derived by applying a lateral offset.
Hello,
I have found a way to use the patch files and to alter them by
seeing the runner.py found here
https://github.com/eclipse/sumo/blob/master/tests/tools/sumolib/patch_network/runner.py . I still don't quite grasp how I can read the existing python
documentation.
Moving on, I manage to change a networks Nodes (a.k.a Junctions)
coordinates. What still perplexes me is what are the hidden pseudo
nodes that can be seen in the edge in neteditor. When I select them I
can't get information about them. They look like nodes but I can't
select them. Are they just simple coordinates that give the shape of
the edge? If so can I alter them by altering the shape in .edg.xml
files? Are they the same as the shape of child lane of the edge in
.net.xml?
Attached you can find an image of the said pseudonodes.
Thank you,
Tom
Quoting cchadj01@xxxxxxxxxxxx:
> Hello again,
>
> I understood what plain-xml. It is the editable version of the
> network that consists of nod.xml, edg.xml, con.xml typ.xml. I also
> have found out from the examples in the site that you can access
> those files like so:
>
> for edge in sumolib.output.parse('out.edg.xml', ['edge'], warn=True):
> speedSum += float(edge.speed)
> print(edge.attr_from)
>
> What I don't understand is why is parse() in the sumolib output
> object? In the documentation found here
> http://sumo.dlr.de/daily/pydoc/sumolib.html it says that you can
> access this function directly from sumolib object.
>
> What I also don't understand is how can I alter the plain xml? (How
> can I create new patch files and how to alter existing ones).
>
> Am I reading the documentation wrong or is it written wrongly ?
>
> Thank you,
> Tom
>
>
>
> Quoting cchadj01@xxxxxxxxxxxx:
>
>> Hello,
>>
>> Could you please tell me what do you mean by converting the network
>> to plain-xml?
>> Isn't net.xml plain-xml? I can not find sufficient documentation
>> for sumolib.xml.parse.
>>
>> In addition how could I use said patch files in an existing network?
>>
>> Thank you for your help,
>> Tom
>>
>> Quoting cchadj01@xxxxxxxxxxxx:
>>
>>> Hello,
>>>
>>> Thank you for for the prompt reply.
>>> I have searched into sumolib.xml.parse but I can't see how I can
>>> use it as I can't find any documentation. I have also tried
>>> sumolib but I can not see how I can change a node's position.
>>>
>>> Thank you,
>>> Tom
>>>
>>> Quoting Jakob Erdmann <namdre.sumo@xxxxxxxxx>:
>>>
>>>> Hello,
>>>> The only supported way to create networks is via netconvert. For
>>>> programmatic modifications you can either:
>>>> a) - convert the network to plain-xml
>>>> - modify those (sumolib.xml.parse can help with that. It creates
>>>> objects that allow attribute access and which can write
>>>> themselves back out
>>>> as xml)
>>>> - re-assemble into .net.xml with netconvert
>>>>
>>>> b) generate patch files and patch the .net.xml using netconvert (patch
>>>> files are like plain-xml files but you only need to set those attributes
>>>> you wish to change)
>>>>
>>>> - you can read the network graph using function sumolib.readNet (
>>>> http://sumo.dlr.de/wiki/Tools/Sumolib)
>>>> - you can modify the network while the simulation is running by changing
>>>> lane permission (If you add forbidden edges beforehand you can activate
>>>> them at runtime and vice versa)
>>>>
>>>> regards,
>>>> Jakob
>>>>
>>>>
>>>> Am Mi., 30. Jan. 2019 um 20:17 Uhr schrieb <cchadj01@xxxxxxxxxxxx>:
>>>>
>>>>> Hello,
>>>>>
>>>>> I was wondering if I can have any programmatic access to netedit so
>>>>> I can change my network from code or any other way I can change a road
>>>>> network from code for that matter.
>>>>> I wouldn't want to reinvent the wheel by creating an xml parser and
>>>>> editor.
>>>>>
>>>>> Thank you,
>>>>> Tom
>>>>>
>>>>>
>>>>>
>>>>>
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