asNNGraph               Function to produce idx and dist representation
                        of a VeloViz graph
buildVeloviz            Creates VeloViz graph and FDG layout from PC
                        scores of current and projected transcriptional
                        states.
graphViz                Visualize as velocity informed force directed
                        graph
normalizeDepth          Normalizes counts to CPM
normalizeVariance       Identify overdispersed genes by normalizing
                        counts per million (CPM) gene expression
                        variance relative to transcriptome-wide
                        expectations (Modified from SCDE/PAGODA2 code)
pancreas                Pancreas scRNA-seq data
plotEmbedding           Plot 2D embedding From scde/pagoda2/MUDAN
plotVeloviz             Plot function
projectedNeighbors      Computes composite distances between all cell
                        pairs and returns k-nearest neighbors and edge
                        weights needed to build VeloViz graph.
reduceDimensions        Reduce dimension using Principal Components
                        Analysis via 'svds' from 'RSpectra'
vel                     MERFISH velocity subset
veloviz                 veloviz
