Removing Outliers
I am creating new trade areas for my stores. I use a formula based on sales and distance from the tract to the store. Basically I create a list of the top tracts that add up to a certain distribution and turn a Weight_Flag = 1 for those tracts.
I then use those tracts to create a contiguous trade area shape. It works great except I get some outliers as you can see below. To keep it contiguous it selects a lot of tracts that should not be included in my trade area. Below the yellow dots are tract points that have been chosen (Weight_Flag = 1) and the Arrows highlight some of the outliers.
Is there a step or two I can take using a geoprocessing tool or something to find these outlier points and turn those flags = 0. Simple is best. We've adjust the formula a few times and we are happy with it. 98% of the trade areas look great. Just trying to perfect the last 20 or so without manual intervention.
