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
while MATLAB® software indexing is
The output from
Retrieve Probe Set Library Information
This example shows how to extract probe set library information from Affymetrix® GeneChip® microarray data.
You need some sample data files from here. This example uses the sample data from the E. coli Antisense Genome Array. Extract the data files from the DTT archive using the Data Transfer Tool.
You also need to download the corresponding library file for the sample. For this example, Ecoli_ASv2.CDF is used as for the E. coli Antisense Genome Array. You may already have these files if you have any Affymetrix GeneChip software installed on your machine. If not, get the library files by downloading and unzipping the E. coli Antisense Genome Array zip file.
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('C:\LibFiles\Ecoli_ASv2.CDF');
Extract probe set library information.
probeInfo = probelibraryinfo(celStruct, cdfStruct);
Determine the probe set to which the 1104th probe belongs.
ans = 'thrA_b0002_at'
Introduced before R2006a