location allocation: is there a way to set a minimum threshold for allocated weight for a chosen facility?

[vtam]

I am creating a location allocation analysis layer. is there a way to set the parameters so that a candidate facility is chosen only if it has enough weighted demand allocated? The demand in this case is captured in the weight field as you load the points. An example of this would be if I was allocating tract centroids with population counts as demand to a set of potential evacuation centers but i only want those centers selected if there are at least 1000 people from tracts that go to it.

[JaySandhu]

Generally speaking, there is no setting on Location-Allocation to set a minimum threshold on a facility.

However, you could screen sites that are not feasible. For example, you must have some sort of distance or travel time constraint for reaching the 1000 people, eliminate the candidates that do not have a 1000 people within your cutoff. Not saying that this will give you the desired results, just improves the chances.

You can also do an iterative approach. Solve for X sites, remove ones that do not meet the minimum criteria and solve again.

Regards,

Jay Sandhu

[Vicky_WTam]

Thanks,  Jay.  Will try that approach.