section g of routines in rays.i

Home Manual Packages Global Index Keywords Quick Reference | # functions in rays.i - g
get_s0 |
                 get_s0(rays)

         returns the s-coordinate of the point of closest approach of
         the RAYS to the origin x=y=z=0.  The length of the first dimension
         of RAYS may be either 3, 5, or 6; this first dimension will not
         be present in the result.
         The s-coordinate represents distance along the ray, increasing in
         the direction the ray moves.  The 5 and 6 component ray coordinates
         include a reference point (x,y,z) on the ray; s=0 at that point.
         For the 3 component ray coordinate, get_s0 always returns 0.

    interpreted function, defined at i/rays.i   line 223
SEE ALSO: | best_rays, dirt_rays, internal_rays