MAS 5.0 expression measure
This function converts an instance of AffyBatch
into an instance of ExpressionSet using
our implementation of Affymetrix's MAS 5.0 expression measure.
mas5(object, normalize = TRUE, sc = 500, analysis = "absolute", ...)
object |
an instance of |
normalize |
logical. If |
sc |
Value at which all arrays will be scaled to. |
analysis |
should we do absolute or comparison analysis, although "comparison" is still not implemented. |
... |
other arguments to be passed to |
This function is a wrapper for expresso and
affy.scalevalue.exprSet.
The methods used by this function were implemented based upon available documentation. In particular a useful reference is Statistical Algorithms Description Document by Affymetrix. Our implementation is based on what is written in the documentation and, as you might appreciate, there are places where the documentation is less than clear. This function does not give exactly the same results. All source code of our implementation is available. You are free to read it and suggest fixes.
For more information visit this URL: http://stat-www.berkeley.edu/users/bolstad/
if (require(affydata)) {
data(Dilution)
eset <- mas5(Dilution)
}Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.