Plot spectrum and calculate cct and vct.
Plot spectrum and calculate CCT and VCT
specplot [infile.sp]
-v
verbose
-c
combine multiple files into one plot
-z
don't make range cover zero
-u level
plot effect of adding estimated UV level
-U
plot effect of adding range of estimated UV level
[infile.sp ...]
spectrum files to plot default is all built in illuminants