This code is referenced in the pathway enrichment workflow step Visualize.
Use R/Bioconductor to generate an [expression dataset (.txt)](http://software.broadinstitute.org/cancer/software/gsea/wiki/index.php/Data_formats#TXT:_Text_file_format_for_expression_dataset_.28.2A.txt.29 and phenotype file (.cls) for Enrichment Map.
- R: version 3.3.1
- Bioconductor: version 3.3