MATLAB: How to normalize the spectra by 650 nm

normalizespectra

sorry, I can't find the answer about this way to normalize the spectra at a certainly wavelength. Like this：

Hi,

you might want to use the normalize function:

result = normalize(A,'range')

Best regards

Stephan

x = logspace(log10(400e-9), log10(700e-9))

If you want the area to be 1.0, create the sum over the spectrum and divide the values by the result.

spectrum   = rand(1, 100);  % Example data
normalized = spectrum / sum(spectrum);