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fcros (version 1.6-6)

A Method to Search for Differentially Expressed Genes and to Detect Recurrent Chromosomal Copy Number Aberrations

Description

A fold change rank based method is presented to search for genes with changing expression and to detect recurrent chromosomal copy number aberrations. This method may be useful for high-throughput biological data (micro-array, sequencing, ...). Probabilities are associated with genes or probes in the data set and there is no problem of multiple tests when using this method. For array-based comparative genomic hybridization data, segmentation results are obtained by merging the significant probes detected.

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Version

Install

install.packages('fcros')

Monthly Downloads

264

Version

1.6-6

License

GPL (>= 2)

Maintainer

Doulaye Dembele

Last Published

January 27th, 2026

Functions in fcros (1.6-6)

chrPlot2

Plot a chromosome segmentation results
dataSummary

Summarization of the detection results for a list of chromosomes
chrSegment

Segmentation of a chromosome data
fcrosMod

Search for differentially expressed genes or to detect recurrent copy number aberration probes
fcros2

Search for differentially expressed genes/probes
fcrosC

Search for differentially expressed genes/probes
fcrosFCmat

Calculation of a matrix of fold changes using pairwise comparisons
fcros

Search for differentially expressed genes/probes
fcrosTopN

Search for the top N changed genes or probes
fcrosTtest

Student t-test for detecting differentially expressed genes
fcrosRead

Read a tab delimited text file
fcrosWrite

Writing the fcros() or pfco() results in a tab delimited text file
fc2Calc

Calculation of fold change using pairwise comparison values
pvalTopN

Search for the top N changed genes or probes using p-values
fvalTopN

Search for the top N changed genes or probes using f-values
varBeta

Compute variance of a beta distribution from data
fvalVolcanoPlot

Performs a volcano plot of the FCROS/PFCO statistics
pfco

Searching for differentially expressed genes/probes using an approach based on the Perron-Frobenius theorem
histoPlot

Histogram plot function of the fcros package results
moyStdCalc

Calculation of the mean and the standard deviation of the full or reduced matrix of sorted ranks
pvalVolcanoPlot

Performs a volcano plot of the FCROS/PFCO statistics
fcros-package

A Method to Search for Differentially Expressed Genes and to Detect Recurrent Chromosomal Copy Number Aberrations
voomReads

Transformation of read count values
scoreThr

Determine numerically a threshold for the ranking score
rmatTrim

Calculation of the reduced matrix containing sorted rank values
fdata

Example of dataset for the fcros package.
pfcoMod

Searching for differentially expressed genes or detecting recurrent copy number aberration probes using an approach based on the Perron-Frobenius theorem
rmatCalc

Calculation of the FC matrix using pairwise comparisons
rankReads

This function computes a score to assess the significance of sequencing values
tprobaCalc

Calculation of the Student one sample test probabilities
tcnReads

Performs a total count normalization of reads
chrPlot

Plot a chromosome data
cghData

Example of aCGH "data file" for the fcros package.
chrMerge

Using a C code for merging chromosome segments
calcSRmat

Calculation of the sorted rank matrix from the dataset
calcSRmatMod

Calculation of the sorted rank matrix from the dataset
bott

Example of sequencing data to test the rankReads function.
cghInfo

Example of aCGH "info file" for the fcros package.