Hello,
SUMO uses UTM by default and shifts the coordinates so that the lower left
network corner is at 0,0.
However, your original network file was created without projection
information (projParameter="!").
In this case SUMO only takes the coordinates it was already given and
shifts them without doing any projecting.
>From their magnitude one can try guess what the original projection for the
vissim data was (possibly UTM).

Do you know from which city this network is?

regards,
Jakob


2018-04-20 9:22 GMT+02:00 Thuresson, Daniel <
[email protected]>:

> Hi,
>
>
>
> I was expecting absolute values in some coordinate system (as stated in
> the manual). Manual also states that values should be offset with “netOffset”.
>
>
> What kind of coordinates does SUMO output? UTM?
>
> I don’t know much about the creation of the original net-file since that
> was created before I got involved. I think it originates from some VISSIM
> export, but not sure.
>
>
>
> /Daniel
>
>
>
> *From:* [email protected] [mailto:sumo-user-bounces@
> eclipse.org] *On Behalf Of *Jakob Erdmann
> *Sent:* den 20 april 2018 09:03
> *To:* Sumo project User discussions <[email protected]>
> *Subject:* Re: [sumo-user] Vehicle position output
>
>
>
> Hello,
> What kind of coordinates would you expect? The origBoundary values look a
> bit like UTM values where the wrong zone was used for projecting something
> from Finnland.
>
> regards,
>
> Jakob
>
>
>
> 2018-04-20 7:58 GMT+02:00 Thuresson, Daniel <daniel.thuresson.2@volvocars.
> com>:
>
> Hi,
>
>
>
> I have the EmissionOutput activated and wants to use the x and y position
> output. The manual says this:
>
>
>
> pos_x
>
> ---
>
> The absolut X coordinate of the vehicle. The value depends on the given
> geographic projection.
>
> pos_y
>
> ---
>
> The absolut Y coordinate of the vehicle. The value depends on the given
> geographic projection.
>
>
>
>
>
> Fine, but the results file looks something like this:
>
>
>
> <vehicle id="100.39" type="veh165" lane="1072.0_0" speed="13.89"
> pos="71.74" angle="274.98" x="4687.89" y="1231.88" dist2front="170.56"/>
>
>
>
> What are the x and y values? A coordinate relative to something?
>
> A read about this in the manual and found out that you should:
>
>
>
> “For networks with no projection (projParameter='!'), only the offset
> must be applied.”
>
>
>
> Ok, my offset is this:
>
>
>
> <location netOffset="-1433123.30,-7374447.50"
> convBoundary="0.00,0.00,9340.19,10863.49" origBoundary="1433123.30,
> 7374447.50,1442463.49,7385311.00" projParameter="!"/>
>
>
>
> If I subtract the offsets the result still makes no sense to me…
>
>
>
> Any help is appreciated!
>
>
>
> Rgds /Daniel
>
>
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