[Radiance-general] gendaylit error

[kyle konis]

I have recently installed RADIANCE 4.1 on my mac (ver 10.7.4) and i
was, up until recently, merrily making my way through Axel's rtcontrib
lesson.


# I am getting stuck when trying to implement gendaylit . . .

# I have what i consider to be acceptable input to gendaylit:

kyle% gendaylit 6 24 11.5 -a 51.15 -o 0.18 -m -0 -W 159 447

# and the error message:

# gendaylit 6 24 11.5 -a 51.15 -o 0.18 -m 0 -W 159 447
file coeff_perez.dat cannot be opened
lect_coeff_perez does not work


# the direct normal value and diffuse horizontal value, along with the
day, month,  hour, latitude, longitude, and meridian, are from the
Gatwick epw file GBR_London.Gatwick.037760_IWEC.epw which is
considered by Axel (in his tutorial) to be of sufficient quality to
not produce gendaylit errors, and i think i am pulling realistic
weather values for that time, so i'm perplexed here. And i've tried a
few other times and values, but my guess is that it's not struggling
to make a sky model and giving up.

Is it a simple permission issue?
I've tried chmod 755 and chmod 644 to the coeff_perez.dat but it
already had acceptable permissions assigned to it.

is it a location issue?
the file is in /usr/local/ray/src/gen

is it a PATH issue? (here is from my env)

PATH=/Library/Frameworks/Python.framework/Versions/2.6/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin:/opt/local/bin:/opt/local/sbin:/usr/local/ray/bin

RAYPATH=.:/usr/local/ray/lib

MANPATH=/usr/share/man:/usr/local/share/man:/usr/X11/share/man:/opt/local/share/man:/usr/local/ray/doc/man


Any suggestions would be appreciated, as usual, it is probably
something very simple. . .

-Kyle