extract gene-level expression measurements from ballgown objects
For objects created with Cufflinks/Tablemaker, gene-level measurements are calculated by appropriately combining FPKMs from the transcripts comprising the gene. For objects created with RSEM, gene-level measurements are extracted directly from the RSEM output.
- a ballgown object
gene-by-sample matrix containing per-sample gene measurements.
data(bg) gene_matrix = gexpr(bg)