PseudotimeOrdering      The PseudotimeOrdering class
averagePseudotime       Compute the average pseudotime
createClusterMST        Minimum spanning trees on cluster centroids
defineMSTPaths          Define paths through the MST
guessMSTRoots           Guess the roots of a MST
rowmean                 Compute column means based on a grouping
                        variable
splitByBranches         Split a graph into branch-free paths
