Bugs+&+'features'

=Known issues, features and bugs to be addressed in librat=

Cause Divide by zero due to a 1/cos(zenith) in the geometry.location & geometry.lookat
 * Issue**

Effect rat: signal interrupt 11 for process 47658 (try switching it off and on again ;-)

Fix: trap better in code

Cause Number of groups permitted is hardwired to 50000. This is problem if you have many large object files
 * Issue**

Effect rat: signal interrupt 11 for process 47658 (try switching it off and on again ;-)

Fix:  Can be overridden by  setting environment variable MAX_GROUPS i.e. setenv MAX_GROUPS 200000 say. Other environment variables used in librat:

MAX_SUNS (default = 180) PRAT_MAX_MATERIALS (default = 1024)

Non-Lambertian material properties not accounted for in spectral invariant mode
 * Issue**

Fix: pass through in code