Search (1 results, page 1 of 1)

  • × theme_ss:"Informationsmittel"
  • × theme_ss:"Internet"
  • × theme_ss:"Suchoberflächen"
  1. Potmesil, M.: Maps alive : viewing geospatial information on the WWW (1997) 0.02
    0.019165486 = product of:
      0.038330972 = sum of:
        0.017839102 = weight(_text_:information in 2703) [ClassicSimilarity], result of:
          0.017839102 = score(doc=2703,freq=6.0), product of:
            0.08850355 = queryWeight, product of:
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.050415643 = queryNorm
            0.20156369 = fieldWeight in 2703, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              1.7554779 = idf(docFreq=20772, maxDocs=44218)
              0.046875 = fieldNorm(doc=2703)
        0.02049187 = product of:
          0.04098374 = sum of:
            0.04098374 = weight(_text_:22 in 2703) [ClassicSimilarity], result of:
              0.04098374 = score(doc=2703,freq=2.0), product of:
                0.17654699 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.050415643 = queryNorm
                0.23214069 = fieldWeight in 2703, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046875 = fieldNorm(doc=2703)
          0.5 = coord(1/2)
      0.5 = coord(2/4)
    
    Abstract
    Describes a WWW based system which allows users to view, search and post geographically indexed information of the Earth. 2 geographic browsers have been developed: a 2D map browser capable of continuous scroll and zoom of an arbitrarily large sheet and a 3D flight-simulator browser capable of continuous flight around the Earth. On the server side, a geographical and geometrical server has been developed which contains large databases of images, elevations, lines, points and polygons stored in tiles structured into hierarchical pyramids or quadtrees. A metadata server has also been developed which contains URL pointers and geographical coordinates of various WWW documents, geographical information and geometrical models
    Date
    1. 8.1996 22:08:06