Convert spectrum to color

This simple script can convert reflective/transmissive spectra to color and plot it in the CIE 1931 diagram.

%It can load spectrum from an excel, the format should as follow:

%column 1: wavelength data(unit: nm/m)

%column 2 to n: reflectance/transmittance spectrum

%The default light source is D65,one can change light source in

%spectrum2XYZ function

%Author:Tingbiao Guo, Zhejiang University, email:[e-mail]