Re: [UrbanSim-Users] sum_dataset_over_ids()

Hi,

If this can help you.

The method sum_dataset_over_ids() have been added in V4.1.

I think you work with it and you have a mixte of new and old version Opus
libraries.

See same possible solution, I answer to other person :
http://www.urbansim.org/pipermail/users/2007-September/0003.html
=> http://www.urbansim.org/docs/installation/release_notes.html

So, for version > 4.1, it is necessary to delete existing Opus/Urbansim in
Python site-packages.

Regards,
Philippe.

-----Message d'origine-----
De : users-bounces_at_urbansim.org [mailto:users-bounces_at_urbansim.org]De la
part de Hakim OUARAS
Envoye : dimanche 23 septembre 2007 12:46
A : users_at_urbansim.org
Objet : [UrbanSim-Users] sum_dataset_over_ids()

Hello,

I try to use the function "sum_dataset_over_ids()", for example to compute
the number of households in each gridcell or number of jobs.

When I used it to run UrbanSim I received the following message.

"StandardError: Unknown function sum or error occured during evaluation."

I attached the complete log of households and jobs computing.

Can someone please help me to correct this error?

Thanks a lot.

Hakim.
Paris.
Received on Mon Sep 24 2007 - 06:28:24 PDT