Lab 6 [GIS6005]: Proportional Symbol Maps for Positive and Negative Values


This map uses proportional symbology to map positive and negative values. In order to achieve this within ArcGIS Pro, separate features classes representing positive ranges of values were created for the losses and for the gains. 

 When creating the final symbology for the two items, settings were then adjusted to make sure values noted in the legend were represented by similarly sized item on the map (i.e., same sized circle for 50K for jobs lost or jobs gained). 

 Finally, contrasting colors (green and orange) were then selected to help the reader visually compare states with losses and gains. A lighter border for the circles compared to the deeper shade in the interior was then used so the smallest sized items could be more easily discerned against the underlying layer with state borders, as shown in a close-up of the legend here:

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