psmeans {LMGene} | R Documentation |
Converts an ExpressionSet
or AffyBatch
object with one row of expression data per probeset into an ExpressionSet
or AffyBatch
object with one row per probe.
psmeans(eS, ind)
eS |
An |
ind |
A vector used to indicate which probes go into which probesets. |
Each entry of ind
corresponds to one probe and tells the number of the probeset it belongs to. See tranestAffyProbeLevel
and sample.ind
for examples.
Returns an ExpressionSet
or AffyBatch
object with the expression matrix rows corresponding to probesets instead of individual
probes. Elements of the returned ExpressionSet
or AffyBatch
object are means over each probeset.
John Tillinghast
tranestAffyProbeLevel
, sample.ind
library(LMGene) library(Biobase) data(sample.eS) data(sample.ind) # glog transform data trs.eS <- transeS (sample.eS, 667, 65) # lowess normalize ntrs.eS <- lnormeS(trs.eS) # take means over probesets genesample.eS<- psmeans (ntrs.eS, sample.ind)