queryGEO {AnnBuilder}R Documentation

Function to extract a data file from the GEO web site

Description

Data files that are available at GEO web site are identified by GEO accession numbers. Give a GEO object with the url for a common CGI and a GEO accession number, this function extracts data from the web site and returns a matrix containing the data portion of the file

Usage

queryGEO(GEOObj, GEOAccNum)

Arguments

GEOObj GEOObj a GEO object
GEOAccNum GEOAccNum a character string for the GEO accession number of a desired file

Details

The GEO object contains the url for a CGI script that processes user's request. queryGEO invokes the CGI by passing a GEO accession number and then processes the data file obtained.

Value

queryGEO returns a matrix containing data obtained.

Note

This function is part of the Bioconductor project at Dana-Farber Cancer Institute to provide Bioinformatics functionalities through R

Author(s)

Jianhua Zhang

References

www.ncbi.nlm.nih.gov/geo

See Also

GEO-class

Examples

geo <- GEO()
temp <- queryGEO(geo, "GPL49")

[Package AnnBuilder version 1.4.21 Index]