Within ENVISION, you can create a Distance Decay analysis. Distance Decay is a geographical term which describes the effect of distance on spatial interactions. The Distance Decay shows the distribution of your customers around a location and can be used to help determine whether creating a new custom Trade Area is warranted for conducting customer analysis. It helps answer the following types of questions:
What percentage of my customers live within 5 miles of my store location?
What size should my trade area be for this location, based on where my customers live?
How far do my customers travel to get to my store?
For a more detailed explanation and steps click on the attached QuickStart document.