Hello,
 
I have created a chromLocation object by:
 
chrObj.bands<-buildChromLocation.2("hgu133plus2",major=c("arms","bands")
 
I have a list of probe IDs for which I would like only the cytoband information. I am having trouble separating the genome position from the probe id and then matching the probe id to the cytoband information.  I would like a matrix:
 
Probe Id     cytoband
xxxxx           xxxxx
 
Any help would be appreciated.
 
Thanks,
Beth


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