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01_​NIR_​Spectral_​Data_​Analysis_​Preprocessing_​2

NIR Spectral Data Analysis - Preprocessing

This workflow performs data preprocessing on NIR spectroscopy data. The user is able to select a subset of observations, as well as to visually select spectral regions of interest (peaks) before applying preprocessing methods of choice. Common spectral preprocessing methods, i.e., centering, scaling, SNV and Savitizky golay filtering are included in the workflow. The user can adjust which of these methods to use and define the order of application.

Once the user verified that the preprocessing methods are working as expected on the selected subset, the same transformation will be applied to all samples, i.e. the complete dataset at the end of the workflow. In a last step, the preprocessed data is exported to disk for the next steps of spectral analysis

NIR Spectral Data Analysis - PreprocessingThis workflow performs data preprocessing on NIR spectroscopy data. The user is able to select a subset ofobservations, as well as to visually select spectral regions of interest (peaks) before applying preprocessing methodsof choice. Common spectral preprocessing methods, i.e., centering, scaling, SNV and Savitizky golay filtering areincluded in the workflow. The user can adjust which of these methods to use and define the order of application.Once the user verified that the preprocessing methods are working as expected on the selected subset, the sametransformation will be applied to all samples, i.e. the complete dataset at the end of the workflow. In a last step, thepreprocessed data is exported to disk for the next steps of spectral analysis select region(s) of the spectra to prepocess use view to select and define the order of preprocessing methods Savitzky Golay method requiresprospectr R packagesplit non-spectracolumns apply preprocessing to all observationsView andSelect Peaks Select PreprocessingMethods Data Cleaning Preprocess Select Observations View PreprocessedSpectra Column Splitter Write to File Table Reader Preprocess NIR Spectral Data Analysis - PreprocessingThis workflow performs data preprocessing on NIR spectroscopy data. The user is able to select a subset ofobservations, as well as to visually select spectral regions of interest (peaks) before applying preprocessing methodsof choice. Common spectral preprocessing methods, i.e., centering, scaling, SNV and Savitizky golay filtering areincluded in the workflow. The user can adjust which of these methods to use and define the order of application.Once the user verified that the preprocessing methods are working as expected on the selected subset, the sametransformation will be applied to all samples, i.e. the complete dataset at the end of the workflow. In a last step, thepreprocessed data is exported to disk for the next steps of spectral analysis select region(s) of the spectra to prepocess use view to select and define the order of preprocessing methods Savitzky Golay method requiresprospectr R packagesplit non-spectracolumns apply preprocessing to all observations View andSelect Peaks Select PreprocessingMethods Data Cleaning Preprocess Select Observations View PreprocessedSpectra Column Splitter Write to File Table Reader Preprocess

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Created by: Temesgen H. Dadi
Created at: 2020-12-13
On NodePit since: 2021-03-25
Last update: 2025-02-16
Created with KNIME version: v4.3.0
Tags: Lab dataNIR spectroscopyspectroscopyLife Sciences

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