Re: commercial vacancy

Quinn

I assume you are using the gridcell version of UrbanSim4. If so, the
gridcell table contains a commercial_sqft_per_employee and an
industrial_sqft_per_employee which can be multiplied by the number of
jobs in commercial or industrial building_type to get the occupied
commercial or industrial sqft (you do have to sum jobs by grid_id and
building_type to get the relevant total jobs in a cell, and then
multiply by the sqft per employee on the gridcell for that
building_type). The vacancy is just the gap between this result and the
total commercial or industrial sqft.

We now also have a model for business location choice, where the choice
is among buildings, and one of the attributes is the building_type
(which is user-specified). Sqft per employee is an attribute of the
business in this model, which we are testing in San Francisco and Seattle.

Paul

Quinn Korbulic wrote:
>
> Hello,
>
> I have a couple questions regarding commercial/industrial vacancy when
> running UrbanSim. During about the first ten years or so of a model
> run there is no commercial or industrial development. I find in the
> logs that there is an especially high number of vacant sqft which
> leads to the model not creating any new industrial or commercial
> development. So how does urbanism calculate vacant sqft? Also, how
> would one go about determining sqft per job for the
> industrial/governmental/commercial _sqft_per_job fields in the
> gridcells table as I suspect this has something to do with my problem?
>
> Thanks,
>
> *Quinn Korbulic***
>
> GIS Coordinator
>
> Spatial Applications and Research Center
>
> New Mexico State University
>
> Geography Department
>
> Box 30001, Dept. MAP
>
> Las Cruces, NM 88003-0001
>
> VOICE (505) 646-5755
>
> FAX (505) 646-7430
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> Users mailing list
> Users_at_urbansim.org
> http://www.urbansim.org/mailman/listinfo/users
>
Received on Sun Jun 03 2007 - 21:20:08 PDT