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Chemometric data preprocessing

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Chemometric data preprocessing



15 Mar 2011 (Updated )

M-files for data preprocessing by several methods.

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ABSTRANS Convert spectral absorbance to transmitance
TRANSABS Convert spectral transmitance to absorbance
SNV Standard Normal Variate
SAVGOL Savitsky-Golay smoothing and differentiation
NORMALIZ Normalize matrix rows dividing by its norm
NORMXAS Normalize XAS spectra to absorbance range from 0 to 1
MSC Multiplicative Scatter Correction
CENTER Mean center scales matrix to zero mean
AUTO Autoscales matrix to zero mean and unit variance
SCAL Scals matrix using means and standard deviations
RESCAL Rescals matrix using means and standard deviations

Required Products Statistics and Machine Learning Toolbox
MATLAB release MATLAB 7.8 (R2009a)
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01 Jun 2011 1.2

Function for normalize absorbance of XAS spectra was added

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