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How do I normalize Area under curve of NIR spectra to 1

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NCA
NCA on 27 Jun 2021
Edited: Image Analyst on 27 Jun 2021
How do I normalize Area Under Curve of NIR spectra to 1 using Matlab 2020b please?
Thank You

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Image Analyst
Image Analyst on 27 Jun 2021
Edited: Image Analyst on 27 Jun 2021
Don't you just do
signal = signal / sum(signal);
That's if you're plotting your signal like little bars in a bar chart. If you're computing area like they're little trapezoids, then use
signal = signal / trapz(signal);

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