time   calls  line
                  1 function [x,y,z] = sph2cart(az,elev,r)
                  2 %SPH2CART Transform spherical to Cartesian coordinates.
                  3 %   [X,Y,Z] = SPH2CART(TH,PHI,R) transforms corresponding elements of
                  4 %   data stored in spherical coordinates (azimuth TH, elevation PHI,
                  5 %   radius R) to Cartesian coordinates X,Y,Z.  The arrays TH, PHI, and
                  6 %   R must be the same size (or any of them can be scalar).  TH and
                  7 %   PHI must be in radians.
                  8 %
                  9 %   TH is the counterclockwise angle in the xy plane measured from the
                 10 %   positive x axis.  PHI is the elevation angle from the xy plane.
                 11 %
                 12 %   Class support for inputs TH,PHI,R:
                 13 %      float: double, single
                 14 %
                 15 %   See also CART2SPH, CART2POL, POL2CART.
                 16 
                 17 %   Copyright 1984-2005 The MathWorks, Inc. 
                 18 %   $Revision: 5.12.4.2 $  $Date: 2005/05/31 16:31:22 $
                 19 
  0.34      15   20 z = r .* sin(elev); 
  0.37      15   21 rcoselev = r .* cos(elev); 
  0.43      15   22 x = rcoselev .* cos(az); 
  0.40      15   23 y = rcoselev .* sin(az);