visGSEA: Function to visualise running enrichment score for a given sample and a gene set
Description
visGSEA is supposed to visualise running enrichment score for a
given sample and a gene set. To help understand the underlying running
enrichment score, the input gene scores are also displayed. Positions
for members in the given gene set are color-coded in both displays (red
line for the positive gene scores, and green line for the negative).