psmeans {LMGene}R Documentation

Function to take means of probesets.

Description

This is used to estimate expression levels of genes based on the measurements for the relevant probes.

Usage

psmeans(eS, ind)

Arguments

eS A transformed, normalized expression set.
ind A vector used to indicate which probes go into which probesets.

Details

The vector ind has form like c(1,1,1,2,2,2,2,3,3,4,4,4,...) Each entry corresponds to one probe and tells the number of the probeset it belongs to.

Value

Returns an expression set with the same vlist as eS, but the matrix rows now correspond to probesets instead of individual probes.

Note

Author(s)

John Tillinghast

References

See Also

Examples


data(sample.eS)
data(sample.ind)
transeS (sample.eS, 667, 65) -> trs.eS
lnormeS(trs.eS) -> ntrs.eS
psmeans (ntrs.eS, sample.ind) -> genesample.eS


[Package LMGene version 1.8.0 Index]