Split-Screen Map
A split-screen map displays two or more map views side by side, synchronized in position and zoom level, allowing users to compare different datasets, time periods, or basemap styles simultaneously without losing spatial context.
A split-screen map is a comparison visualization technique that divides the screen into two or more linked map panels, each showing a different layer, time period, or style while maintaining synchronized navigation. When the user pans or zooms in one panel, all others follow, ensuring that the same geographic area is always visible across all views. This makes it easy to spot differences and similarities between datasets. Split-screen maps are commonly used for before-and-after comparisons of satellite imagerySatellite ImagerySatellite imagery consists of photographs and data captured by Earth observation satellites orbiting the planet. Thes... (e.g., pre- and post-disaster), comparing basemapBasemapA basemap is the background reference layer in a web or GIS map that provides geographic context such as roads, terra... styles (street vs. satellite), evaluating different scenarios in urban planningUrban PlanningUrban Planning is the systematic process of designing and managing the development of cities and communities. It inte..., and contrasting historical and current land use. They are especially powerful in journalism and public communication, where side-by-side visual evidence is compelling and easy to understand. Web mapping libraries support split-screen layouts through synchronized map instances. MapboxMapboxMapbox is a robust platform that equips developers with tools to create highly customizable, interactive maps for web... GL Compare is a popular plugin that places two Mapbox maps side by side with a draggable divider. LeafletLeafletLeaflet is a lightweight, mobile-friendly JavaScript library for building interactive mapping applications. Known for....Sync synchronizes panning and zooming across multiple Leaflet maps. OpenLayersOpenLayersOpenLayers is a mature, open-source JavaScript library for building interactive web maps that support a wide range of... and CesiumCesiumCesium is a cutting-edge platform for creating high-performance, interactive 3D geospatial visualizations on the web.... also support multi-view setups. Design best practices include clear panel labels, minimal UI clutter, and ensuring both panels share the same scale and projection for fair comparison.
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