ne. 

          /. 
          Make a CSPICE plane from n and c, and then find a 
          point in the plane and spanning vectors for the 
          plane.  n need not be a unit vector. 
          ./ 
          <a href="nvc2pl_c.html">nvc2pl_c</a> ( n,       c,     &amp;plane         ); 
          <a href="pl2psv_c.html">pl2psv_c</a> ( &amp;plane,  point,  span1,  span2 );
           
 
          /.
          Apply the linear transformation to the point and 
          spanning vectors.  All we need to do i