Skip to main content
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [List Home]
Re: [sumo-user] [OD2TRIPS]
  • From: Michael Behrisch <oss@xxxxxxxxxxx>
  • Date: Tue, 7 May 2019 19:36:44 +0200
  • Autocrypt: addr=oss@xxxxxxxxxxx; prefer-encrypt=mutual; keydata= mQGiBFLSvucRBACGsasS4GeIWs1CFNTOYmp3ScQ2ZTJLJWQxhPliwtHTzLsErYu9Y7e8qDov iHFviYyaNuceUNoACm1e4MT4eu0DmM2Wk3y/jjD6hfm7L0EZNPxQhj+CJf2oZAm2ezCe7/si xZ2d7TCO8yWavOGbF0EVi/ZDIJqVgupu6WBpv/NCewCg65HQiS1wm+1w1MdFYxKCmXzbv08D /iWXX3tzabbCrLlUum8hBgBpJEHRtlic2uaGsKm8Fize4tfLZkTBbTYLYXfcx2Oq9+lINPTW h9jnbCjAjErRWLTjNTQjel0JnDryCnqabub/R3wScR/EHRDBeS9L6YRj0xdVd2qIaArtSYRR auKPNc4M2qZNEFSM37cXC7avhpdeA/99oJf4qyVly4RxHmekAmj9UJjRx17x9xX8t9uzUuSt AeTh+kQ3o5jK7veU6/F/+pPyi96EOzym9BJA8pgXC8hLWNjOajI10filkdQ26QsfHOpUdPSZ 4Duyw9Ayj8loagEnnAONmU/xE0QlyVBANIut0W+SNqPScYXfnBbVOaG3HbQiTWljaGFlbCBC ZWhyaXNjaCA8b3NzQGJlaHJpc2NoLmRlPohjBBMRAgAjBQJS0sHSAhsjBwsJCAcDAgEGFQgC CQoLBBYCAwECHgECF4AACgkQPBD+ltFwpimlmQCdGgnYuHxoye4vFntyHRcE0Ij0318AoN3s szGyKcKdUmPpgXLhFcNfRGe4uQENBFLSvucQBACRAt3OW7eL8N3OJp2bZz/rRldtxjcViEcd +wpQcL9Ag0b6W7e4cbSc9oSU9MAdOvxR0UxualeRGz37W/VEC8cFZb3kFtRdl66gGygKb7gl 2S27495XEYqE7BBF1HfQDjL9sh5GfuIzORkqhCHSUTdkRuzRPxNQcEYFSrASEi9jQwADBQP9 FeuTC1SJHrX9tP3p4xrEa07XkCq+UzwNhDdezoQfT1CUbOv+LT66yLTXAaiHXelgaPMQO1Oo 76U2z0C1LudkAcDdwJbMuZ0RfDoRjsgfhfvM6kqiP4m0s2NR3Y3O+HKXjwtPbXuDwaYIAIvp aj8b59n7fQyfL6BZsO0QZc0i/t+ISQQYEQIACQUCUtK+5wIbDAAKCRA8EP6W0XCmKY1lAKCc 3miJueOXuvZJWV7qGBQxxyR83gCgxhGPL9OrP22rxNJSo1w5OOUxHsM=
  • Delivered-to: sumo-user@xxxxxxxxxxx
  • List-archive: <https://www.eclipse.org/mailman/private/sumo-user>
  • List-help: <mailto:sumo-user-request@eclipse.org?subject=help>
  • List-subscribe: <https://www.eclipse.org/mailman/listinfo/sumo-user>, <mailto:sumo-user-request@eclipse.org?subject=subscribe>
  • List-unsubscribe: <https://www.eclipse.org/mailman/options/sumo-user>, <mailto:sumo-user-request@eclipse.org?subject=unsubscribe>
  • Openpgp: preference=signencrypt
  • User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1
Hi,
SUMO adds a vehicle to the current time slice using randomized rounding,
see the code here:
https://github.com/eclipse/sumo/blob/master/src/od/ODMatrix.cpp#L145 but
as far as I can tell from the current code and our tests the sum for
each OD cell over time should only deviate by at most 1 from the input
even when using fractional values.

Can you share your inputs?

Best regards,
Michael

Am 07.05.19 um 18:21 schrieb Luca Di Costanzo:
> Jackob for some OD pair I have always number smaller than 1 but the sum
> give me a number greater than 1. After OD2TRIPS I got that, as flow, 
> zero as value of generated vehicles instead, for trips I got 480
> vehicles (the sum of OD matrix is around 445).
> 
> So I think that, in trip generation TRIPS there's a methodology he use
> to generate trips even from decimal numbers but I, still, cannot
> understand which is the one
> 
> 
> Ing. Luca Di Costanzo
> 
> -----------------------------
> MsC in Hydraulic and Transportation Engineering 
> Bsc in Civil Engineering 
> contact: dicostanzo.luca@xxxxxxxxx <mailto:dicostanzo.luca@xxxxxxxxx>
> skype: lucadicostanzo82
> tel: +39 333 43 92 544
> 
> 
> Il giorno mar 7 mag 2019 alle ore 15:50 Luca Di Costanzo
> <dicostanzo.luca@xxxxxxxxx <mailto:dicostanzo.luca@xxxxxxxxx>> ha scritto:
> 
>     Hi all,
> 
>     I want to ask people how SUMO (and more specificly OD2TRIPS)
>     consider the presence of real number (basically with decimal points)
>     in a OD matrix. 
> 
>     I have and OD matrix like the one I attacched to the message and I'm
>     trying to figure out the result in term of trips. Some other
>     software generates the total number of vehicles (supposing the sum
>     is 6.95 they generates 7 vehicle) randomly on some OD. 
> 
>     Is SUMO works in the same mode or not? Thanks in advance
> 
>     Ing. Luca Di Costanzo
> 
>     -----------------------------
>     MsC in Hydraulic and Transportation Engineering 
>     Bsc in Civil Engineering 
>     contact: dicostanzo.luca@xxxxxxxxx <mailto:dicostanzo.luca@xxxxxxxxx>
>     skype: lucadicostanzo82
>     tel: +39 333 43 92 544
> 
> 
> _______________________________________________
> sumo-user mailing list
> sumo-user@xxxxxxxxxxx
> To change your delivery options, retrieve your password, or unsubscribe from this list, visit
> https://www.eclipse.org/mailman/listinfo/sumo-user
>

Attachment: signature.asc
Description: OpenPGP digital signature

Back to the top