Reads the header of an Affymetrix probe data (APD) file.
# S3 method for default
readApdHeader(filename, ..., verbose=FALSE, .checkArgs=TRUE)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.
The filename of the APD file.
Not used.
See Verbose.
If TRUE, arguments are validated, otherwise not.
Henrik Bengtsson
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.
readApd().