Geographic Information Systems Asked on November 12, 2021
How do i select a feature (point) based on a specific attribute value(s) of another layer?
Scenario:
One layer (map) polygons representing disease risk across a continent, with several columns representing different attributes (risk scale 1-4 etc.) and another layer with point features representing individual movement over time.
I would like to select point features which are overlayed on polygons with a risk scale above 2.5.
As @BERA suggests in the comments, you want to do a two part selection using Select by Attribute and Select by Location. First, use Select by Attribute to select the polygons with a risk scale above 2.5 Then second, use Select by Location to select the points that are within these polygons ("intersect the source layer feature" will be a fine spatial selection for your needs). Your target layer will be the points, and your source layer will be the polygons. Make sure to check the "use selected features" box.
Answered by ycartwhelen on November 12, 2021
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