[BioC] problems with Affymetrix probes id using exonmap and xmapcore

Gomez Moruno, Antonio agomezm at idibell.cat
Thu Apr 28 09:54:38 CEST 2011


I got several .CEL files to do RMA using exonmap library, when i got my list significant differentially expressed probesets and i try to use xmapcore to map to annotation using "exonic", all i got is a NULL vector. I used xmapcore examples and all worked perfectly, but my list of Probesets have no correspondance in xmapcore. Anyone has any idea?

This is my session info

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
 [1] hugene10stv1cdf_2.8.0                hugene10sttranscriptcluster.db_7.0.1
 [3] hugene10stprobeset.db_7.0.1          org.Hs.eg.db_2.5.0                  
 [5] RSQLite_0.9-4                        AnnotationDbi_1.14.1                
 [7] limma_3.8.1                          plier_1.22.0                        
 [9] exon.pmcdf_1.1                       xmapcore_1.6.0                      
[11] IRanges_1.10.0                       RMySQL_0.7-5                        
[13] DBI_0.2-5                            RColorBrewer_1.0-2                  
[15] genefilter_1.34.0                    affy_1.30.0                         
[17] Biobase_2.12.1                      exonmap_2.0.03

loaded via a namespace (and not attached):
[1] affyio_1.20.0         annotate_1.30.0       digest_0.4.2         
[4] preprocessCore_1.14.0 splines_2.13.0       
[7] survival_2.36-8       tools_2.13.0          xtable_1.5-6  

this is my raw data

AffyBatch object
size of arrays=1050x1050 features (21 kb)
cdf=exon.pmcdf (1411189 affyids)
number of samples=12
number of genes=1411189
annotation=hugene10stv1
notes=




Thanks in advance


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