scMetaTraj_axis_score   Calculate metabolic axis scores
scMetaTraj_cluster      Cluster cells in metabolic PCA space
scMetaTraj_cluster_profile
                        Summarize metabolic profiles of clusters
scMetaTraj_embed        Embed cells in metabolic feature space
scMetaTraj_flow         Compute local directional consistency along mPT
scMetaTraj_mPT_distribution
                        Prepare mPT distribution data for metabolic
                        subclusters
scMetaTraj_plot_gradient
                        Plot metabolic gradient on UMAP
scMetaTraj_plot_module_cards
                        Plot metabolic module cards
scMetaTraj_plot_trend_by_cluster
                        Plot module trends by metabolic cluster
scMetaTraj_plot_trend_multi
                        Plot multiple module trends with switchpoints
scMetaTraj_score        Calculate metabolic pathway scores for single
                        cells
scMetaTraj_switchpoint
                        Identify metabolic trajectory switchpoint
scMetaTraj_transition_zone
                        Identify candidate transition zone along mPT
scMetaTraj_trend        Compute metabolic module trend along pseudotime
scMetaTraj_trend_by_cluster
                        Compute module trends along mPT stratified by
                        metabolic cluster
scMetaTraj_trend_multi
                        Compute trends and switchpoints for multiple
                        modules along mPT
