exprfilter {ballgown} | R Documentation

## subset ballgown objects using an expression filter

### Description

Create a new ballgown object containing only transcripts passing a mean expression filter

### Usage

    exprfilter(gown, cutoff, meas = "FPKM")

### Arguments

`gown` | a ballgown object
`cutoff` | transcripts must have mean expression across samples above this value to be included in the return
`meas` | how should transcript expression be measured? Default FPKM, but can also be `'cov'`.

### Value

A new ballgown object derived from `gown`, but only containing transcripts (and associated exons/introns) with mean `meas` greater than `cutoff` across all samples.

### See Also

`subset`

### Examples

      data(bg)
      # make a ballgown object containing only transcripts with mean FPKM > 100:
      over100 = exprfilter(bg, cutoff=100)

[Package ballgown version 2.18.0 Index]