ScoreSignatures_UCell   Calculate module enrichment scores from
                        single-cell data
StoreRankings_UCell     Calculate and store gene rankings for a
                        single-cell dataset
calculate_Uscore        Calculate rankings and scores for query data
                        and given signature set
check_genes             Check if all genes in signatures are found in
                        data matrix - otherwise add zero counts in
                        data-matrix to complete it
check_signature_names   Check signature names and add standard names is
                        missing
data_to_ranks_data_table
                        Calculate per-cell feature rankings
enrichIt                Calculate gene set enrichment scores for
                        single-cell data
enrichmentPlot          Gene Rank Enrichment Plot Display the rank
                        order density for individual gene sets by group
                        identify. This function will use the group
                        variable to take the mean rank order across all
                        individual cells.
escape.gene.sets        In-Built Gene Sets for Escape
getGeneSets             Get a collection of gene sets to perform
                        enrichment on
getSignificance         Perform significance testing between groups and
                        enrichement scores.
masterPCAPlot           Visualize the components of the PCA analysis of
                        the enrichment results
pcaEnrichment           Density plot of the principal components
performPCA              Calculate Principal Components for the
                        Enrichment Scores
rankings2Uscore         Get signature scores from pre-computed rank
                        matrix
ridgeEnrichment         Generate a ridge plot to examine enrichment
                        distributions
splitEnrichment         Generate a split violin plot examine enrichment
                        distributions
u_stat                  Calculate Mann Whitney U from a vector of ranks
u_stat_signature_list   Calculate U scores for a list of signatures,
                        given a rank matrix
