Target Vacancies
The
target_vacancies table is used by the development location choice model. It gives the model information about acceptable vacancy rates. The table has one row for each year the simulation runs. Each row gives target values for the residential and nonresidential vacancies for that year, which are defined below. Only data after the base year is used. Note that you can use either the building_type_id or the is_residential attribute to set target vacancy rates, or a combination of them. At least one of them must be used.
| Column Name |
Data Type |
Required |
Description |
| building_type_id |
Integer |
N |
Unique id of the building type |
| is_residential |
Integer |
N |
0 for non-residential, 1 for residential building types |
| target_vacancy_rate |
Float |
Y |
The ratio of unused space to total building space |
| year |
Integer |
Y |
The simulation year |
In urbansim_zone.configs.urbansim_zone.xml, under the Model Manager section, in the run method of development_project_transition_model, the argument target_attribute_name is set to "target_vacancy". If this is the case, I believe the above named column "target_vacancy_rate" should be changed to "target_vacancy" to match the default run argument.
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JesseAyers - 05 Jan 2010
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FirouzehNourzad - 07 Dec 2009
Topic revision: r4 - 05 Jan 2010 - 16:29:40 -
JesseAyers