readApdHeader | R Documentation |
Reads the header of an Affymetrix probe data (APD) file.
## Default S3 method:
readApdHeader(filename, ..., verbose=FALSE, .checkArgs=TRUE)
filename |
The filename of the APD file. |
... |
Not used. |
verbose |
See |
.checkArgs |
If |
The file format of an APD file is identical to the file format of an
FileVector
. Most elements of the APD header are stored
in the comment
character
string of the file vector's header.
The APD header nbrOfProbes
is identical to the length of the
file vector, and is not stored in the above comment string.
A named list
.
The numeric
element nbrOfProbes
is the number of probe values
available in the APD file.
The optional character
element name
specifies the name of
the APD vector.
The optional character
element chipType
specifies the
chip type, cf. the same field in readCelHeader
.
The optional character
element maptype
specifies the type of
probe-index map for this APD file. Its value can be used to find
the mapping file, see findApdMap
() and readApdMap
().
All other fields are optional and character
values.
Henrik Bengtsson
readApd
().
## Not run: #See ?createApd for an example.
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