
Hi, I have a list of probes and a table with porbes' chromosome coordinates. I want to retrieve probe's gene symbol, gene's chromosome coordinate,..... I can use biomaRt to retrieve info one probe at a time. For example: > genesymbol<-getBM(attributes=c('entrezgene','hgnc_symbol','description','chromosome_name','start_position','end_position'),filters=c('chromosome_name','start','end'),values=list(4,40354254,40354313),mart=ensembl)
> genesymbol
  entrezgene hgnc_symbol
1      55584      CHRNA9
                                                              description
1 cholinergic receptor, nicotinic, alpha 9 [Source:HGNC Symbol;Acc:14079]
  chromosome_name start_position end_position
1               4       40337346     40357234
> 
I just wonder if there is a quick way to retrieve the info for all probes I have at once? I have chromosome coordinates of my probes in a tab-delimited txt file like: 4       40354254     40354213
5 234567        3450404006 4736473      4897789............ Any suggestion? Thanks a lot for the help! Ying 		 	   		  
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