Varanka_Data_Layers_Menu

Image of data sets available to use in the interface of the Map Knowledge Base visualization system. 

The Map as Knowledge Base project is developing a prototype system for delivering data from The National Map as Linked Open Data (LOD).

The user interface of this system engages various visualization methods for users to quary, evaluate, and retrieve data from the USGS and non-USGS sources.

The core concept is that data would be co-referenced, displayed and available for further exploration.

The UI supports the browseable graph approach for data queries that more specifically allows the user to limit data to their criteria and integrate with related data. 

Several starting points are possible for the Map as Knowledge Base user.  SPARQL or GeoSPARQL queries are assisted with a query builder. The image shown below assists the selection of a graph dataset, selection of properties, and filtering results, among other semi-automated functions. 

The user interface lists datasets to select through a menu.

When selecting a feature of interest, a pop-up window appears with property links, as shown in the image below.  An option to query more information returns additional properties.

In addition to map visualization an ontology can be viewed either as a separate window for full viewing, or a smaller inset view for focused on a feature of interest.