Load metabolite data from three separate filesSource:
Load metabolite data from three separate files (import files using `fread` from data.table).
load_data( data_path = NULL, feature_path = NULL, sample_path = NULL, featureID = "CHEM_ID", sampleID = "PARENT_SAMPLE_NAME" )
Path to the metabolite measurements (peak area data or normalized data, sample [row] * feature [column])
Path to the metabolite annotation (chemical annotation)
Path to the sample annotation (sample meta data)
a character of the metabolite ID column (in feature file and the column names of data file), default: CHEM_ID (provided from Metabolon file)
a character of the sample ID column (in sample file and the first column of data file), default: PARENT_SAMPLE_NAME (provided from Metabolon file).