Look up information for Affymetrix probe set
|Structure created by the |
|Character vector or cell array of character vectors specifying one or more probe set IDs/names or gene IDs.|
|Structure or array of structures containing
the following fields for a probe set:|
a structure or an array of structures containing information for an Affymetrix probe
set specified by
ID, a character vector or cell
array of character vectors specifying one or more probe set IDs/names
or gene IDs, and by
AffyStruct, a structure
created from an Affymetrix CHP file or Affymetrix CDF library
file for expression assays.
Note: This function works with CHP files and CDF files for expression assays only. It requires that the GIN library file associated with the CHP file or CDF file to be located in the same folder as the CDF library file.
The following example uses the CDF library file from the E. coli Antisense Genome array, which you can download from:
The following example assumes that the
file is stored at
Read the contents of a CDF library file into a MATLAB® structure.
cdfStruct = affyread('D:\Affymetrix\LibFiles\Ecoli\Ecoli_ASv2.CDF');
Look up the gene ID (
associated with the
argG_b3172_at probe set.
probesetlookup(cdfStruct,'argG_b3172_at') ans = Identifier: '3315278' ProbeSetName: 'argG_b3172_at' CDFIndex: 5213 GINIndex: 3074 Description: [1x82 char] Source: 'NCBI EColi Genome' SourceURL: [1x74 char]