readImageneHeaders {limma}R Documentation

Read Imagene Header Information

Description

Read the header information from an Imagene image analysis output file. This function is used internally by read.maimages and is not usually called directly by users.

Usage

readImageneHeaders(file)

Arguments

file character string giving file name, including path if not in current working directory

Details

Output files produced by the image analysis software Imagene include a number of lines of header which contain information about the printing process. This function extracts that information and locates the line where the intensity data begins.

Value

A list with components

Begin.Raw.Data line number immediately before the line where the intensity data begins
Version version number of Imagene software
Date character string giving time and data that array was scanned
Image.File character string giving original file name to which data was written by Imagene
Inverted logical
Field.Dimension list with components Field containing a character string, Metarows containing number of grid rows, Metacols containing number of grid columns, Rows containing number of spot rows in each grid, Cols containing number of spot columns in each grid
Measurement.Parameters list with numerical components Signal.Low, Signal.High, Background.Low, Background.High, Background.Buffer and Background.Width

Author(s)

Gordon Smyth

References

http://www.biodiscovery.com/imagene.asp

See Also

read.imagene

An overview of LIMMA functions to read data is given in 3.ReadingData.

Examples

## Not run: 
This function is not intended to be called by users.
There is an example of use in the code for function read.imagene.
## End(Not run)
print(read.imagene)

[Package limma version 1.6.7 Index]