Nature of data: showing the extent of areas visible from a range of landscape-scale polygons and view points.
Purpose of data: To assist strategic site choices when planning visually prominent development types. A web page with general introduction and links to map images produced from the data is available from Natural resources Wales. This is new data output, believed to be seminal for Wales.
Resolution and extent: The visibility mapping uses a 30m resolution open-source digital terrain model for the whole of Wales, out to maximum viewing distance of 35km, including overlaps to/from England where relevant. The 30m digital terrain model was sourced from the Shuttle Radar Topography Mission (Van Zyl, 2001) and processed using the Quantum GIS plugin developed by Cuckovic (2016). See page 23 of technical report (via the link above) for more detail.
