FAQ:  How does Business Analyst Online calculate data when only a portion of a census block is within a trade area?

【解决方案】
If a census block is not completely encompassed by a trade area (such as simple rings, drive times, or hand drawn polygons), then Business Analyst Online uses the Hybrid method to calculate data for reports.

The Hybrid method is a combination of the Block Apportionment and Cascading Centroid methods. The Block Apportionment method calculates data based off of a percentage of the census block. In contrast, the Cascading Control method uses data for the entire census block.

【创建及修改时间】
Created: 12/23/2013

Last Modified: 1/3/2014
【原文链接】
http://support.esri.com/en/kno ... 41966