plotOrderedExpression: plotOrderedExpression
In shazanfar/DCARS: Differential Correlation across Ranked Samples

the plotOrderedExpression function plots expression vectors along branches and genes as ribbon plots

1 2	plotOrderedExpression(branchData, gene, xvals = NULL, subsetBranch = NULL, facet = FALSE)

`branchData`	is a list containing matrices of the cell expression per branch, assumed that the columns of each matrix in branchData is ordered by pseudotime. If branchData is not given as a list, it will be converted into a list containing branchData.
`gene`	is either a single character string with an underscore, or a two length character vector
`xvals`	is a list containing the x-values associated with the samples in branchData (if NULL, samples will just be plotted against their rank)
`subsetBranch`	subsetBranch is a character vector containing the names of the branches to be plotted. If NULL it will plot all branches
`facet`	can either be FALSE, "branch", "gene", or "both"