@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix isothes: <http://purl.org/iso25964/skos-thes#> .

<https://concepts.sagepub.com/social-science/concept/geographic_information_systems>
  skos:prefLabel "geographic information systems"@en ;
  a skos:Concept ;
  skos:narrower <https://concepts.sagepub.com/social-science/concept/viewshed_analysis> .

<https://concepts.sagepub.com/social-science/concept/viewshed_analysis>
  skos:definition "Viewshed analysis, a form of visibility analysis that identifies visibility between points in a landscape, emerged as a geographic field several decades ago. Recent advances in software and computing power enabled viewshed analysis to become a common form of geographical analysis, and it is now a standard tool in many geographic information systems, enabling viewshed analysis to be used in a range of fields. [Source: <a href=\"https://sk.sagepub.com/reference/geography/n1211.xml\" target=\"_blank\" data-id=\"to-sk\">Encyclopedia of Geography; Viewshed Analysis</a>]"@en ;
  skos:broader <https://concepts.sagepub.com/social-science/concept/geographic_information_systems> ;
  skos:prefLabel "viewshed analysis"@en ;
  a skos:Concept .

<https://concepts.sagepub.com/social-science/concept/conceptgroup/methods>
  a skos:Collection, isothes:ConceptGroup ;
  skos:prefLabel "methods"@en ;
  skos:member <https://concepts.sagepub.com/social-science/concept/viewshed_analysis> .