If specified, the calculated spectrum is multiplied with a filter function defined in file.  

filter_function_file file [normalize]

 
The file must contain two columns. Column 1 is the wavelength, in nm. Column 2 is the corresponding filter function value. Comments start with #. Empty lines are ignored. In combination with output sum or output integrate this option is useful e.g. to calculate weighted irradiances or actinic fluxes or to simulate broadband or satellite observations.

If the optional second argument normalize is specified, the integral of the filter function over wavelength is normalized such that output_process integrate gives radiative properties per wavelength, averaged over the filter function.