[Radiance-general] [help] error message from running gencumulativesky

[Ji Zhang]

Dear Radiance experts,

I got a long list of error message in the terminal when running
gencumulativesky.exe in Win7

Error!  Solar altitude < 6 degrees and Idh > 10 W/m^2 on day 1!  Attempting
to continue!
Error!  Solar altitude < 6 degrees and Idh > 10 W/m^2 on day 1!  Attempting
to continue!
Error!  Solar altitude < 6 degrees and Idh > 10 W/m^2 on day 2!  Attempting
to continue!
Error!  Solar altitude < 6 degrees and Idh > 10 W/m^2 on day 3!  Attempting
to continue!
......
Error!  Solar altitude < 6 degrees and Idh > 10 W/m^2 on day 347!
Attempting to continue!
Error!  Solar altitude < 6 degrees and Idh > 10 W/m^2 on day 349!
Attempting to continue!
Error!  Solar altitude < 6 degrees and Idh > 10 W/m^2 on day 359!
Attempting to continue!
Error!  Solar altitude < 6 degrees and Idh > 10 W/m^2 on day 364!
Attempting to continue!
There were 4064 sun up hours in this climate file
Total Ibh/Lhb: 661.221506


The gencumulativesky command is:

gencumulativesky +s2 -a 51.15 -o -0.18 -m 0 -h -2 -G
./London_weather_file_global_and_diffuse_radiation.txt >
CumulativeSky_df_London.cal



The "London_weather_file_global_and_diffuse_radiation.txt" used contains two
columns of data extracted from London's epw file that are "global horizontal
radiation" and "diffuse horizontal radiation" for every hour of the whole
year.

The CumulativeSky_df_London.cal and a SunFile.rad files were generated. And
the SunFile.rad file contains 2165 sun position definitions.


May I ask:
1. Am I running the GenCumulativeSky.exe correctly?
2. What does the error message mean? and Why is the error generated?
3. Will the error affect the two files generated?

Thanks in advance!

- Ji
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