colsMean                Compute Row-wise Means for Groups of Columns
merge_of_lab_and_spectrum
                        Merge Soil Laboratory Data with Spectral Data
ml_f                    Machine Learning Function for Soil Spectral
                        Data
msd.comp                Compute Model Evaluation Metrics
raw                     Aggregate VNIR Spectra by Columns
soil_preprocess         Soil and Spectral Data Preprocessing for Model
                        Training
