Those interested in open source graphic index applications – or in viewing historic map series of Scotland – may be interested in the new Sheet Viewer on the National Library of Scotland maps website.
The Viewer allows a choice of historic and modern mapping layers as a backdrop to selecting map sheets of interest. The mapping layers can be located using a gazetteer or UK National Grid Reference search, as well as by browseable gazetteers of historic counties and their parishes. The application displays Ordnance Survey coordinates, the National Grid Reference as well as WGS84 coordinates for actual position of the mouse cursor. Our backdrop maps are compatible with Google Maps. The application automatically generates a link for the displayed position on the map.
Only open-source projects are utilized: OpenLayers software for the visualization in a web browser, GeoServer as the backend which serves the map series shapefiles, and MapTiler to render the raster map tiles for large mosaics. This new search interface replaces our previous five separate ArcIMS search applications and integrate them into a faster and clearer interface, without annual license fees. Our Help page provides information on the map series included, and further guidance on using the application.
The application was developed by Klokan Technologies, who offer customization, integration and support for open-source mapping and software.