importFromApt.CnChipEffectSet {aroma.affymetrix}R Documentation

Imports copy-number estimates from an APT summary file

Description

Imports copy-number estimates from an APT summary file. Currently only total copy-number estimates can be imported.

Usage

CnChipEffectSet$importFromApt(filename, path=NULL, combineAlleles=TRUE, cdf, ..., skip=TRUE, verbose=FALSE)

Arguments

filename The filename of the APT summary file.
path An optional path to the file.
combineAlleles If TRUE, ...
cdf An AffymetrixCdfFile object.
... Not used.
skip If TRUE, already imported arrays will be skipped.
verbose See Verbose.

Details

This import method is robust and memory efficient. One array at the time is imported by first writing to a temporary file which is then renamed to the final name, if import was successful. (If the import failed, a temporary file will rename that has to be deleted manually).

Since only one array at the time is imported, the memory overhead will be bounded allowing to import very large tab-delimited data files containing a large number of arrays. Unfortunately, this approach slows down the reading substantially, because in each import all but one column is parsed but ignored.

Value

Returns an CnChipEffectSet.

Author(s)

Henrik Bengtsson (http://www.braju.com/R/)

See Also

For more information see CnChipEffectSet.


[Package aroma.affymetrix version 1.2.0 Index]