Swipe Map

A swipe map is an interactive comparison visualization in which a vertical or horizontal slider divides the map view into two halves, each displaying a different layer. As the user drags the slider, more of one layer is revealed while the other recedes, creating an intuitive before-and-after or layer-versus-layer comparison at the exact same geographic position and zoom levelZoom LevelA zoom level is a discrete scale step in a web mapping tile system that determines the amount of geographic detail di.... Swipe maps are heavily used in remote sensingRemote SensingRemote sensing is the science of collecting data about Earth's surface without direct physical contact, primarily usi... and environmental monitoringEnvironmental MonitoringEnvironmental Monitoring is the systematic collection and analysis of data about environmental conditions, including ... for change detectionChange DetectionChange detection uses geospatial data and imagery to track and analyze alterations in landscapes, infrastructure, or ...—comparing satellite imagerySatellite ImagerySatellite imagery consists of photographs and data captured by Earth observation satellites orbiting the planet. Thes... from different dates to visualize deforestation, urban sprawl, flood extent, or storm damage. They are also effective for comparing different cartographic styles, showing planned versus existing infrastructure, or contrasting data from different sources. Implementation is straightforward with libraries like MapboxMapboxMapbox is a robust platform that equips developers with tools to create highly customizable, interactive maps for web... GL Compare, which provides a ready-made swipe control for two Mapbox GL JS maps, and LeafletLeafletLeaflet is a lightweight, mobile-friendly JavaScript library for building interactive mapping applications. Known for....Control.SideBySide. The ArcGISArcGISArcGIS is a leading GIS platform offering tools for spatial analysis, mapping, and data visualization. It serves a wi... Maps SDK for JavaScript includes a Swipe widget for comparing layers within a single map view. OpenLayersOpenLayersOpenLayers is a mature, open-source JavaScript library for building interactive web maps that support a wide range of... can achieve the same effect using clip regions. Best practices include using clear labels on each side of the divider, ensuring both layers use the same projection and zoom, and optionally snapping the divider to the center on load so users see both layers immediately.