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  1. Contour Map Creator

    Resources: This service uses ArcGIS Map by Esri, the OpenStreetMap, Geocoding by Nominatim, Mapzen, Leaflet, jQuery and the CONREC contouring algorithm by Paul Bourke …

  2. Contour Map Creator - urgr8.ch

    Resources: This script uses the Google Elevation API, Google Maps, jQuery and the CONREC contouring algorithm by Paul Bourke and Jason Davies. Created by Christoph Hofstetter …