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This is the development version of affyio; for the stable release version, see affyio.

Tools for parsing Affymetrix data files

Bioconductor version: Development (3.20)

Routines for parsing Affymetrix data files based upon file format information. Primary focus is on accessing the CEL and CDF file formats.

Author: Ben Bolstad <bmb at>

Maintainer: Ben Bolstad <bmb at>

Citation (from within R, enter citation("affyio")):


To install this package, start R (version "4.4") and enter:

if (!require("BiocManager", quietly = TRUE))

# The following initializes usage of Bioc devel


For older versions of R, please refer to the appropriate Bioconductor release.


Reference Manual PDF


biocViews DataImport, Infrastructure, Microarray, Software
Version 1.75.0
In Bioconductor since BioC 1.8 (R-2.3) (18 years)
License LGPL (>= 2)
Depends R (>= 2.6.0)
Imports zlibbioc, methods
System Requirements
See More
Linking To
Depends On Me makecdfenv, SCAN.UPC
Imports Me affy, affylmGUI, crlmm, ExiMiR, gcrma, oligo, oligoClasses, puma
Suggests Me BufferedMatrixMethods
Links To Me
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Package Archives

Follow Installation instructions to use this package in your R session.

Source Package affyio_1.75.0.tar.gz
Windows Binary (64-bit only)
macOS Binary (x86_64) affyio_1.75.0.tgz
macOS Binary (arm64) affyio_1.75.0.tgz
Source Repository git clone
Source Repository (Developer Access) git clone
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