section i of routines in drat.i

Home Manual Packages Global Index Keywords Quick Reference | # functions in drat.i - i
integ_flat |
                 integ_flat(opac, source, rays, mesh, slimits)
              or integ_flat(opac, source, ray_paths)

         returns ngroup-by-2-by-nrays result, where result(,1,..) is
         the transparency factors, and result(,2,..) is the self-emission
         for each group on each ray.  The input OPAC and SOURCE are the
         opacity (an inverse length) and the source function (a specific
         intensity).  They are mesh-by-ngroups zone centered arrays.  The
         result has the same units as SOURCE.
         In the second form, RAY_PATHS was returned by the track_rays
         function.

    interpreted function, defined at i0/drat.i   line 1111
SEE ALSO: | integ_linear, track_rays, form_mesh, streak, snap
integ_linear |
                 integ_linear(opac, source, rays, mesh, slimits)
              or integ_linear(opac, source, ray_paths)

         returns ngroup-by-2-by-nrays result, where result(,1,..) is
         the transparency factors, and result(,2,..) is the self-emission
         for each group on each ray.  The input OPAC and SOURCE are the
         opacity (an inverse length) and the source function (a specific
         intensity).  They are mesh-by-ngroups arrays; OPAC is zone centered,
         while SOURCE is point centered (using pcen_source).  The result
         has the same units as SOURCE.
         In the second form, RAY_PATHS was returned by the track_rays
         function.
         The integ_linear routine assumes that the SOURCE function varies
         linearly between the entry and exit points from each zone.  This
         assumption is poor near the turning point, and causes the result
         to be a discontinuous function of the ray coordinates, unlike the
         integ_flat result.

    interpreted function, defined at i0/drat.i   line 1154
SEE ALSO: | pcen_source, integ_flat, track_rays, form_mesh, streak, snap
is_present |
                 is_present(get_vars(f), name)

         returns 1 if variable NAME is present in file F, 0 if not.

    interpreted function, defined at i0/drat.i   line 891