Re: [sumo-user] Inquiry : Conversion from co-ordinate axis to Latitude a

[Sheshadri Kalkunte Ramachandra <sheshadrik@xxxxxxxxxx>]

Thanks a lot! I found the solution.

The problem was with the sumo version.

An old sumo version was not correctly converting co-ordinates.

Sumo 1.1 is transforming between co-ord to lat long clearly

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From: sumo-user-bounces@xxxxxxxxxxx <sumo-user-bounces@xxxxxxxxxxx> on behalf of Jakob Erdmann <namdre.sumo@xxxxxxxxx>
Sent: 04 May 2019 17:30
To: Sumo project User discussions
Subject: Re: [sumo-user] Inquiry : Conversion from co-ordinate axis to Latitude and Longitude

 

By using this <location> value,

traci.simulation.convertGeo(x=50450.7527098387, y=22602.868908196364)

returns

(77.56111960623011, 13.008159137553312)

However, the value

777805.9327098387, 1439436.2689081964

is the raw UTM-value corresponding to that location (the x,y value without the netOffset)

Such a value would be returned by

sumolib.net.convertLonLat2XY(77.56111960623011, 13.008159137553312, rawUTM=True))

I'm pretty sure there must be some other code in your script, responsible for that output because traci alone does not return nor accept raw UTM values.

Am Sa., 4. Mai 2019 um 12:00 Uhr schrieb Sheshadri Kalkunte Ramachandra <sheshadrik@xxxxxxxxxx>:

Sorry for the late response.

Here is the location that we have set.

<location netOffset="-727355.18,-1416833.40" convBoundary="0.00,0.00,90258.93,58234.44" origBoundary="77.098996,12.802468,77.927674,13.334317" projParameter="+proj=utm +zone=43 +ellps=WGS84 +datum=WGS84 +units=m +no_defs"/>

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From: sumo-user-bounces@xxxxxxxxxxx <sumo-user-bounces@xxxxxxxxxxx> on behalf of Jakob Erdmann <namdre.sumo@xxxxxxxxx>
Sent: 03 May 2019 23:46
To: Sumo project User discussions
Subject: Re: [sumo-user] Inquiry : Conversion from co-ordinate axis to Latitude and Longitude

 

What is the <location> attribute of the network that was loaded when the calls below were made?

Am Fr., 3. Mai 2019 um 19:00 Uhr schrieb Sheshadri Kalkunte Ramachandra <sheshadrik@xxxxxxxxxx>:

Code:

position = traci.vehicle.getPosition(self.vehicleId)

pos_x = position[0] # cartesian X
pos_y = position[1] # cartesian Y

geo_co_ord = traci.simulation.convertGeo(pos_x, pos_y, fromGeo=False)

The geo co-ordinates which i receive are incorrect. I have checked by putting them in google maps.

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Outputs:

The cartesian co-ordinate  (50450.7527098387, 22602.868908196364)  => returned by getPosition(vehicleId)

The geo co-ordinate  (777805.9327098387, 1439436.2689081964) => returned by convertGeo(pos_x, pos_y)

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