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OverviewHigh Quality Content by WIKIPEDIA articles! Quadray coordinates, also known as tetray coordinates or Chakovian coordinates, were developed by David Chako, Tom Ace et al., as another take on simplicial coordinates, a coordinate system using the simplex or tetrahedron as its basis polyhedron. The four basis vectors stem from the origin of the regular tetrahedron and go to its four corners. Their coordinate addresses are (1, 0, 0, 0), (0, 1, 0, 0), (0, 0, 1, 0) and (0, 0, 0, 1) respectively. These may be scaled and linearly combined to span conventional XYZ space, with at least one of the four coordinates unneeded (set to zero) in any given quadrant. The normalization scheme is somewhat unusual in keeping all coordinates non-negative. Typical of coordinate systems of this type (a, a, a, a) is an identity vector and may be added to normalize a result. To negate (1,0,0,0), write ( 1, 0, 0, 0) then add (1, 1, 1, 1) to get (0, 1, 1, 1). Full Product DetailsAuthor: Lambert M. Surhone , Miriam T. Timpledon , Susan F. MarsekenPublisher: VDM Publishing House Imprint: VDM Publishing House Dimensions: Width: 22.90cm , Height: 0.60cm , Length: 15.20cm Weight: 0.173kg ISBN: 9786131222160ISBN 10: 6131222169 Pages: 110 Publication Date: 13 August 2010 Audience: General/trade , General Format: Paperback Publisher's Status: Active Availability: In Print This item will be ordered in for you from one of our suppliers. Upon receipt, we will promptly dispatch it out to you. For in store availability, please contact us. Table of ContentsReviewsAuthor InformationTab Content 6Author Website:Countries AvailableAll regions |