number of top gene set testing results to be extracted.
alternative
character which can be one of the three possible alternative p values: "up", "down" or "mixed".
Value
matrix, which is sorted by the "up", "down" or "mixed" p values, with the rows corresponding to estimated p-values for the top number of gene sets and
the columns corresponding to the number of genes for each gene set and the alternative hypotheses mixed, up, down.
Details
This function takes the results from romer and returns a number of top gene set testing results that are sorted by the p values.