stat.gnames {marray} | R Documentation

## Sort Genes According to the Value of a Statistic

### Description

Lists genes and corresponding statistics in decreasing order of the statistics. This function applies to any type of statistic, including log ratios, one and two-sample t-statistics, and F-statistics. Missing values are ignored, as in `sort(..., na.last=NA)`.

### Usage

    stat.gnames(x, gnames, crit= 50)

### Arguments

`x` | a numeric vector containing the statistics for each gene. Missing values (NAs) are allowed.
`gnames` | a character vector containing the gene names.
`crit` | specifies the number of genes to be returned. If crit < 1, the crit*100% genes with the largest x values are listed. If crit >= 1, the crit genes with the largest x values are listed.

### Value

List containing the following components

`gnames` | gene names sorted in decreasing order of the statistics in x.
`t` | statistics sorted in decreasing order.

### Author(s)

Yee Hwa Yang, yeehwa@stat.berkeley.edu
Sandrine Dudoit, sandrine@stat.berkeley.edu

### See Also

`order`, `sort`.

### Examples

    data(swirl)
    aveM <- apply(maM(swirl), 1, mean.na)
    Gnames <- maGeneTable(swirl)

    stat.gnames(abs(aveM), Gnames, crit=10)
    stat.gnames(aveM, Gnames, crit=0.01)

[Package marray version 1.72.0 Index]