Look up information for Affymetrix probe set
|Structure created by the |
|String or cell array of strings 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 string or cell array of
strings specifying one or more probe set IDs/names or gene IDs, and
AffyStruct, a structure created from
an Affymetrix CHP file or Affymetrix CDF library file for
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]