| filter_peaks_by_blank | Filter features by blank samples |
| filter_peaks_by_fraction | Filter features by fraction of missing values |
| filter_peaks_by_rsd | Filter features by RSD% of QC samples |
| filter_samples_by_mv | Filter samples by missing values |
| glog_plot_optimised_lambda | Plot SSE error of lambda optimisation process |
| glog_transformation | Variance stabilising generalised logarithm (glog) transformation |
| MTBLS79 | Direct-infusion mass spectrometry (DIMS) data set |
| mv_imputation | Missing value imputation using different algorithms |
| normalise_to_sum | Normalisation by total sum of the features per sample |
| pqn_normalisation | Probabilistic quotient normalisation (PQN) |
| processing_history | Return history of applied functions and argument from pmp package. |
| QCRSC | Quality Control-Robust Spline Correction (QC-RSC) |
| remove_peaks | Remove features from peak intensity matrix |
| sbc_plot | Plot QCRSC corrected outputs |