stat.confband.text: Rank genes according to the value of a statistic.

In marray: Exploratory analysis for two-color spotted microarray data

Description

Select values based on intensities binning.

Usage

stat.confband.text(M, A, crit1=0.025, crit2=crit1, nclass=5)

Arguments

A	a vector giving the x-coordinates of the points in the scatter plot. In the microarray context, this could be a vector of average log intensities. ie A
M	a vector giving the y-coordinates of the points in the scatter plot. In the microarray context, this could be a vector of log intensity ratios.
crit1	The number of points to be selected. If crit1 < 1, the crit1*100% spots with the smallest M values will be selected. If crit1 >= 1, the crit spots with the smallest M values are selected.
crit2	Similar to "crit1". If crit2 < 1, the crit2*100% spots with the largest M values will be selected. If crit2 >= 1, the crit2 spots with the largest M values are selected.
nclass	A single number giving the approximate number of intensity depedent groups to consider.

Value

A vector of selected spot index.

See Also

stat.gnames

Examples

library(marray)
data(swirl)
aveA <- apply(maA(swirl), 1, mean.na)
aveM <- apply(maM(swirl), 1, mean.na)
stat.confband.text(aveM, aveA, crit1=20, crit2=50, nclass=5)

marray documentation built on Nov. 8, 2020, 6:46 p.m.