Fig. 2
From: Mechanism-aware imputation: a two-step approach in handling missing values in metabolomics
Generation of missing values within the entire data based on mixed-missingness algorithm (adapted from Styczynski et al. [9]). Rows denote metabolites and columns denote samples. The metabolites are sorted down the rows by their average abundances. The parameters α and β separate high (red), medium (blue), and low average abundance metabolites (green), while the parameter γ is used to impose missingness in the medium and low abundance metabolites. Missing values are denoted by X for MCAR (red) and MNAR (green) values respectively