marray: stat.gnames – R documentation

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stat.gnames

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

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)

marray

Exploratory analysis for two-color spotted microarray data

v1.68.0

LGPL

Authors

Yee Hwa (Jean) Yang <jeany@maths.usyd.edu.au> with contributions from Agnes Paquet and Sandrine Dudoit.

Initial release

2009-08-15