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Map viewer

Info

Current version:

Project:

Functionality

A light-weight client map viewer component will be employed:

  • as a frontend of Map Server component to visualize provided WMS, WFS, WCS layers, but also external services.
  • as an integrated part of the Catalogue to visualize primarily the geographical extent of data described in the metadata record and a snapshot visualization of the data
  • to provide the full preview of data, when a link to web service or data browse graphics (preview image) is available

A dedicated mapviewer, can support spatial oriented users in accessing relevant data in a spatial way. For example maps of spatial distribution of soil properties or health indicators over Europe. A typical example is Soilgrids.

An interesting aspect of a community like EUSO is the ability to prepare and share a map with stakeholders to trigger some discussion on phenomena at a location.

Examine the need for viewing novel formats such as Vector tiles, COG, GeoZarr, GeoParquet directly on a map background. The benefit of these formats is that no (OGC) API is required to facilitate data visualisation.

Technology

The mapviewer in the catalogue is the leaflet javascript library on a backdrop of OpenStreetMap tiles (provided by the OpenStreetMap community).

If a more elaborate mapviewer is requested, a suggestion could be the terriajs library. TerriaJS is an environment to share maps (react+leaflet+cesium), but also create maps and share them with stakeholders.