Calculates overlaps between three data.frame objects of expression with `padj` and `log2FoldChange` values to determine signatures.
ExpressionOverlapsTable(df.list, padj.threshold = 0.1, lfc.threshold = log2(1.5), return.mat = TRUE, reducemat = FALSE)
named list data.frame objects with `log2FoldChange` and `padj` columns
significance threshold for padj values
significance threshold for log2FoldChange values
returns a matrix of overlaps; if false, returns list of intersections
returns a reduced version that collapses Up and Down into just "Dependent"
matrix by default, or list of intersections