| arrange_row | Sort a data frame |
| batch_shift | Batch shifting |
| bi_cor_net | Bipartite/two-mode correlation network |
| blank_filter | MS/NMR data filtering based on "blank" data |
| chunk | Split a vector into chunks |
| cor_hcl | Correlation hierarchical cluster analysis |
| cor_net | Correlation network analysis |
| cor_tab | Calculate correlation coefficient and p-values |
| dat2long | Melt a numeric data matrix to long format |
| dat_summ | Data matrix summary |
| dat_symb | Symbolise data set |
| df_na_idx | Get row index of missing values in data frame |
| df_t | Transpose a numeric data frame (with/without NAs) |
| dim_mat | Get dimension matrix of a list of data frame |
| feat_count | Calculate the count number of features |
| gg_heat_dend | Heatmap with dendrograms with ggplot2 |
| graph_stats | Graph level metrics |
| heat_dend | Heatmap with dendrogram on both sides |
| is_zero | Calculate the zero percentage |
| locfdr_filter | Filtering variable based on local false discovery rate |
| mat2df | Convert matrix to df |
| mtExtra-package | mtExtra: More functions for metabolomics data analysis |
| mv_filter | Filtering variable based on the percentage of missing values |
| mv_filter_qc | Data filtering based on "qc" missing values |
| mv_perc | Missing value percentage |
| net_graph | Create an igraph object |
| non_digit | Calculate the percentage of non digits |
| non_zero | Calculate the non-zero percentage |
| outl_det_m | Multivariate outlier detection |
| outl_det_u | Univariate outlier detection |
| pca_plot | PCA plot |
| pcor_dat | Partial correlation analysis |
| pipe | Pipe operator |
| plot_aam | Wrapper function for plotting classification results |
| plot_pval | Plot adjusted p-values |
| qc_filter | MS/NMR data filtering based on RSD of "qc" data |
| qc_pass | Data filtering based on quality assurance in QC samples |
| qc_rlsc | QC based robust LOESS signal correction (QC-RLSC) |
| qc_rlsc_wrap | Wrapper function for QC-RLSC |
| range_scale | Scale vector to a defined range |
| rbind_df | Row binding of a list of data matrix |
| rsd | Relative standard deviation |
| rsd_filter | Filtering variable based on relative standard deviation (RSD) |
| samp_strat | Select random sample with stratification |
| samp_sub | Select random samples from each group Select random samples... |
| sym2long | Convert a symmetric table(short format) to long format |
| trans | Transform data |
| trim_str | Trim white spaces |
| upd_data | Update data set by a subset of features |
| var_filter | Filtering variable based on variability |
| vec2dat | Convert a list of unequal vectors to a data frame |
| vec_segment | Vector statistics for error bar plotting |
| vec_stats | Vector summary |
| vertex_stats | Node descriptive metrics |
