Dear Researcher, I am new to the field of spectroscopy, I have obtained a NIR spectra of 60 different sample of soil. then I did Wet chemical Analysis and find out the (NPK) concentration in each sample. now I want to link it with the spectra so that i can predict NPK of unknown sample using VIS-NIR. waiting keenly for your answers.
also i looked into many articles and Matlab/Python codes for PLSR, PCR etc. but unable to creat link.
Thank you
Hi
From the peak graphs of the results obtained from the analysis, you can compare with different libraries and identify it according to its wavelength. Of course, identifying the substance will be based on the probabilities that your substance is predicted to be.
You can find a PLSR/PCR tutorial, with associated codes here:
https://uk.mathworks.com/help/stats/examples/partial-least-squares-regression-and-principal-components-regression.html
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