Story Map Swipe and Spyglass
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The Story Map Swipe and Spyglass app template allows your users to compare layers in one web map, or compare two different web maps, using a vertical swipe bar or spyglass lens. This application is ideal for showing before and after imagery or comparing thematic data. This app template includes an interactive builder to help you create your story map.
If you use one web map in the application, the web map must contain at least two layers (including the basemap).
If you use two web maps in the application, each web map can contain any number of layers.