geneNames: get gene names from a ballgown object
In ballgown: Flexible, isoform-level differential expression analysis

Description Usage Arguments Details Value See Also Examples

get gene names from a ballgown object

geneNames(x)

## S4 method for signature 'ballgown'
geneNames(x)

`x`	a ballgown object

This vector differs from that produced by geneIDs in that geneNames produces *annotated* gene names that correspond to assembled transcripts. The return will be empty/blank/NA if the transcriptome assembly is de novo (i.e., was not compared to an annotation before the ballgown object was created). See getGenes for matching transcripts to gene names. Some entries of this vector will be empty/blank/NA if the corresponding transcript did not overlap any annotated genes.

named vector of gene names included in the ballgown object, named and ordered by corresponding numeric transcript ID.

geneIDs

data(bg)
# this is a de novo assembly, so it does not contain gene info as it stands
# but we can add it:
annot = system.file('extdata', 'annot.gtf.gz', package='ballgown')
gnames = getGenes(annot, structure(bg)$trans, UCSC=FALSE)
gnames_first = lapply(gnames, function(x) x[1]) #just take 1 overlapping gene
expr(bg)$trans$gene_name = gnames_first

# now we can extract these gene names:
geneNames(bg)