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Geospatial data visualization portals

A geospatial data visualization portal is a web-based platform that allows users to view, analyze, and interact with geospatial data in the form of maps and visualizations. These portals typically combine geographic information system (GIS) technology with data visualization techniques to provide users with a comprehensive view of spatial data.

Here are some key features and functionalities commonly found in geospatial data visualization portals:

1. Map Display: The portal provides a map interface where users can view geographic data, including points, lines, polygons, and raster layers. The map may support various base maps, such as satellite imagery, street maps, or topographic maps.

2. Data Import and Integration: Users can upload their geospatial datasets or connect to external data sources such as shapefiles, GeoJSON, CSV files, or databases. The portal integrates these datasets into the map interface, allowing users to visualize and analyze the data.

3. Layer Styling and Visualization: Users can customize the appearance of the data layers by applying different styles, such as color schemes, transparency, symbology, and labeling options. This helps to visually represent the data in a meaningful way and highlight specific patterns or trends.

4. Interactive Tools: The portal offers interactive tools for exploration and analysis. Users can zoom in/out, pan across the map, measure distances, query features, and perform spatial analysis operations like buffering, clipping, and spatial joins.

5. Attribute and Statistical Analysis: Users can explore the attribute data associated with the geographic features by querying and filtering based on specific criteria. The portal may also provide statistical analysis capabilities, such as summarizing data, calculating statistics, and generating charts or graphs.

6. Time and Animation: Some portals support temporal data, allowing users to visualize changes over time. They can animate the data to see temporal patterns, trends, or spatial relationships evolving over different time periods.

7. Collaboration and Sharing: Users can save their maps, analyses, and visualizations for future reference or share them with others. The portal may provide options to collaborate with teammates, allowing multiple users to work on the same project simultaneously.

8. Geocoding and Reverse Geocoding: The portal may include geocoding capabilities, enabling users to convert addresses or place names into geographic coordinates (latitude and longitude) on the map. Reverse geocoding allows users to obtain address information based on a given location.

9. Geospatial APIs and SDKs: Some portals offer application programming interfaces (APIs) or software development kits (SDKs) that developers can use to build custom geospatial applications or integrate the portal's functionality into existing systems.

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• Hand in Hands FAO: https://data.apps.fao.org/
  
• Bipad portal: https://bipadportal.gov.np/
  
• LRIMS Afghanistan: https://lrimsfaoaf.ait.ac.th/
• PRIMS web-GIS: https://en.prims.brg.go.id/map  
• Urban Footprint: https://app.urbanfootprint.com/
• California Healthy Place Index: https://map.healthyplacesindex.org/
• National geographic web-GIS: https://mapmaker.nationalgeographic.org/#/
  
• Multi-hazard Tajikistan portal: http://tajirisk.ait.ac.th/
  
• Resource Accounting tool: http://resources-info.appspot.com/