compCorr: Compute correlation differences and their p-values

In maigesPack: Functions to handle cDNA microarray data, including several methods of data analysis

Description

This function takes two correlation values (or matrices of correlation values) and calculate the differences between these values (term by term) and their respective p-values by a Fisher's Z transformation.

Usage

compCorr(n1, r1, n2, r2)

Arguments

n1	numerical or matrix of sample sizes for group 1.
r1	numerical or matrix of correlation values for group 1.
n2	numerical or matrix of sample sizes for group 2.
r2	numerical or matrix of correlation values for group 2.

Details

This function use Fisher's Z transformation from scripts adapted from the Internet:
http://ftp.sas.com/techsup/download/stat/compcorr.html
http://www.fon.hum.uva.nl/Service/Statistics/Two_Correlations.html

Value

The result of this function is a list with two numerical items.

diff	matrix (or a single number) of differences between correlation values from two groups
pval	matrix (or a single number) of p-values of differences between the correlation values

Author(s)

Gustavo H. Esteves <[e-mail]>

Examples

compCorr(12, 0.9, 16, 0.73)

Example output

Loading required package: convert
Loading required package: Biobase
Loading required package: BiocGenerics
Loading required package: parallel

Attaching package: ‘BiocGenerics’

The following objects are masked from ‘package:parallel’:

    clusterApply, clusterApplyLB, clusterCall, clusterEvalQ,
    clusterExport, clusterMap, parApply, parCapply, parLapply,
    parLapplyLB, parRapply, parSapply, parSapplyLB

The following objects are masked from ‘package:stats’:

    IQR, mad, sd, var, xtabs

The following objects are masked from ‘package:base’:

    anyDuplicated, append, as.data.frame, basename, cbind, colnames,
    dirname, do.call, duplicated, eval, evalq, Filter, Find, get, grep,
    grepl, intersect, is.unsorted, lapply, Map, mapply, match, mget,
    order, paste, pmax, pmax.int, pmin, pmin.int, Position, rank,
    rbind, Reduce, rownames, sapply, setdiff, sort, table, tapply,
    union, unique, unsplit, which.max, which.min

Welcome to Bioconductor

    Vignettes contain introductory material; view with
    'browseVignettes()'. To cite Bioconductor, see
    'citation("Biobase")', and for packages 'citation("pkgname")'.

Loading required package: limma

Attaching package: ‘limma’

The following object is masked from ‘package:BiocGenerics’:

    plotMA

Loading required package: marray
Loading required package: graph
$diff
[1] 1.253357

$pval
[1] 0.2100758

maigesPack documentation built on Nov. 8, 2020, 6:23 p.m.