maffy.subset {affy} | R Documentation |
Select a subset of rows with small rank-range over columns.
maffy.subset(data,subset.size=5000,maxit=100, subset.delta=max(round(subset.size/100),25),verbose=FALSE)
data |
a matrix |
subset.size |
desired size of subset |
maxit |
maximum number of iterations |
subset.delta |
maximum deviation from subset.size |
verbose |
logical value. |
Please refer to references.
A list with component
subset |
the indexes for subset. |
Magnus Åstrand
Åstrand, M. (2001) http://www.math.chalmers.se/~magnusaa/maffy/
#data(Dilution) #x <- log2(pm(Dilution)[,1:3]) #Index <- maffy.subset(x,subset.size=100)$subset #mva.pairs(x[Index,])