https://community.esri.com/t5/arcgis-spatial-analyst-questions/removing-outliers/m-p/1115225#M11492 <P>I am creating new trade areas for my stores.&nbsp; I use a formula based on sales and distance from the tract to the store.&nbsp; 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.&nbsp;&nbsp;</P><P>I then use those tracts to create a contiguous trade area shape.&nbsp; It works great except I get some outliers as you can see below.&nbsp; To keep it contiguous it selects a lot of tracts that should not be included in my trade area.&nbsp; Below the yellow dots are tract points that have been chosen (Weight_Flag = 1) and the Arrows highlight some of the outliers.&nbsp;&nbsp;</P><P>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.&nbsp; Simple is best.&nbsp; We've adjust the formula a few times and we are happy with it.&nbsp; 98% of the trade areas look great.&nbsp; Just trying to perfect the last 20 or so without manual intervention.</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Outliers.jpg" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/27062i326C9E9574574CD1/image-size/medium?v=v2&amp;px=400" role="button" title="Outliers.jpg" alt="Outliers.jpg" /></span></P><P> </P> Tue, 09 Nov 2021 12:43:36 GMT MichaelPickens 2021-11-09T12:43:36Z https://community.esri.com/t5/arcgis-spatial-analyst-questions/removing-outliers/m-p/1115225#M11492 <P>I am creating new trade areas for my stores.&nbsp; I use a formula based on sales and distance from the tract to the store.&nbsp; 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.&nbsp;&nbsp;</P><P>I then use those tracts to create a contiguous trade area shape.&nbsp; It works great except I get some outliers as you can see below.&nbsp; To keep it contiguous it selects a lot of tracts that should not be included in my trade area.&nbsp; Below the yellow dots are tract points that have been chosen (Weight_Flag = 1) and the Arrows highlight some of the outliers.&nbsp;&nbsp;</P><P>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.&nbsp; Simple is best.&nbsp; We've adjust the formula a few times and we are happy with it.&nbsp; 98% of the trade areas look great.&nbsp; Just trying to perfect the last 20 or so without manual intervention.</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Outliers.jpg" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/27062i326C9E9574574CD1/image-size/medium?v=v2&amp;px=400" role="button" title="Outliers.jpg" alt="Outliers.jpg" /></span></P><P> </P> Tue, 09 Nov 2021 12:43:36 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/removing-outliers/m-p/1115225#M11492 MichaelPickens 2021-11-09T12:43:36Z