prepdata
computes summary statistics that are useful
for all platforms; prepaffy
computes Affymetrix-specific ones. These are
helper functions used by arrayQualityMetrics
.prepdata(expressionset, intgroup, do.logtransform)
prepaffy(expressionset, x)
ExpressionSet
for one colour
non Affymetrix data,
AffyBatch
for Affymetrix data,
NChannelSet
for two colour arrays, or
BeadLevelList
for Illumina
bead arrays.arrayQualityMetrics
.prepdata
.prepaffy
, the returned list is x
with the additional
elements appended.