I need to retireve the gene names for the probes in the affy array:
But when I do a biomart query I get an error when trying to match the attributes "ensembl_gene_id" with "PorGene-1_1-st". it returns the following:
Error in getBM(attributes = c("ensembl_gene_id", "PorGene-1_1-st"), filters = "PorGene-1_1-st", : Invalid attribute(s): PorGene-1_1-st Please use the function 'listAttributes' to get valid attribute names
Why is not this not a proper attribute? . Well, it is not in the list, but why?.