Select by Location - true "completely within" selection

Idea created by dcfrate on Dec 16, 2014
    • dcfrate
    Select by Location in ArcMap offers a few options for selecting features in the Target layer that fall within features in the Source layer, but none to select features from the Target layer that fall completely within a combination of features from the Source layer.
    In this example, several of the polygons in the Target layer (eg. 4-38-51) should be selected, as they are completely within the Source layer. Unfortunately, none are completely within a single Source layer polygon, so they will not be selected. The work-around is to merge or dissolve all features in the Source layer and perform the selection using the output as the Source layer.