Create table of probe set library information
|Three-column matrix with the same number
of rows as the |
a table of information linking the probe data from
a structure created from an Affymetrix CEL file, with probe set
CDFStruct, a structure
created from an Affymetrix CDF file.
Affymetrix probe pair indexing is
The following example uses a sample CEL file and the CDF library file from the E. coli Antisense Genome array, which you can download from:
After you download the sample data, you will need the Affymetrix Data Transfer Tool to extract the CEL file from a DTT file. You can download the Affymetrix Data Transfer Tool from:
The following example assumes that the
is stored on the MATLAB search path or in the current folder.
It also assumes that the associated CDF library file,
is stored at
Read the contents of a CEL file into a MATLAB structure.
celStruct = affyread('Ecoli-antisense-121502.CEL');
Read the contents of a CDF file into a MATLAB structure.
cdfStruct = affyread('D:\Affymetrix\LibFiles\Ecoli\Ecoli_ASv2.CDF');
Extract probe set library information.
ProbeInfo = probelibraryinfo(celStruct, cdfStruct);
Determine the probe set to which the 1104th probe belongs.
cdfStruct.ProbeSets(ProbeInfo(1104,1)).Name ans = thrA_b0002_at