WebGIS

Geographic information systems for territorial and geospatial analysis

Nowadays, the use of geolocated data and geographic information has become essential, especially for territorial analyses, making the sharing and visualisation of geospatial data more immediate.

WebGIS are geographic information systems published on the web. Therefore, following the acquisition, validation, processing and analysis of the relevant geospatial data, results are published online and made accessible to users. In this way, GIS are no longer limited to a single machine: data, functionalities and catalogues are all available via the internet.

WebGIS enable interoperability of geospatial data and functionalities, ensuring interaction between different machines over a network. In particular, the most significant examples of interoperable elements required for web-based GIS include catalogues (collections of metadata), data repositories, viewers and editing systems, which make it possible to visualise and process any type of geospatial data without requiring a specific dedicated workstation.

TerrAria’s work fits precisely within this framework. In particular, we develop WebGIS—including SILVIA (Lombard Information System for Environmental Impact Assessment), ViGIS (Vegetation Index Geographic Information System) and the Geoportal of Lombardy, that allow users to view and query geospatial information, process it using specific tools, and obtain and download results by applying spatial filters.