This directory contains the files necessary to run the 
DISORT discrete-ordinates radiative transfer package from within 
Splus. It has been tested using Splus 3.3 on Sun platforms running
SunOS 5.5 and SGI platforms running Irix 6.0 and 6.1. 

The directory does not contain the DISORT package itself. That package
(including documentation and references) may be found at
ftp://climate.gsfc.nasa.gov/pub/wiscombe/Discr_Ord/. 
You need only the files DISORT.f, R1MACH.f, D1MACH.f, and LINPAK.f. 
Rename DISORT.f to disort.f. 
If you obtain version 1.1 of the software you can apply the supplied
patch to disort.f; otherwise you must go through and remove the calls
to SLFTST and all references to Fortran WRITE statements. 
You may also want to change the values of the problem-size parameters (the
MXxxx variables) in disort.f to modify storage requirements. The
Edit the files R1MACH.f and D1MACH.f as described in the DISORT documentation.
The documentation provided with DISORT is quite extensive, and should
explain any questions you have. 

To install this package see section 11.6 or 11.7 of the Splus 
Programmer's Manual. Don't forget to edit the Makefile to 
choose the appropriate WHICH_LOAD target for your operating system.
Irix 6.x users should remember to set the SGI_ABI environment 
variable to -32 before building the package for SPlus 3.3.
You will need to provide a .First.lib function 
(in file First.lib.q) to load the object code. 
I've provided examples for SunOS using dyn.load and Irix 
using dyn.load.shared.

I welcome comments and bug reports, but I can't promise to 
support this interface. 
---
Robert Pincus
Climate and Radiation Branch, Code 913
NASA Goddard Space Flight Center
Greenbelt MD 20771

Robert.Pincus@gsfc.nasa.gov