Dear list. I'm using biomaRt to do a fairly simple query against the Ensembl human database. I get returned a table with column names that don't match the data in the columns. See below. I can reshuffle them afterwards to make them, but thats not ideal. Am I doing something wrong? Thanks, Mark > library(biomaRt) Loading required package: RCurl > mart=useMart(biomart="ensembl", dataset="hsapiens_gene_ensembl") Checking attributes and filters ... ok > mart Object of class 'Mart': Using the ensembl BioMart database Using the hsapiens_gene_ensembl dataset > b<- getBM (c ("ensembl_gene_id ","chromosome_name ","sequence_biotype ","sequence_exon_chrom_start ","sequence_exon_chrom_end "),filters="ensembl_gene_id",values="ENSG00000197530",mart=mart) > dim(b) [1] 25 5 > b[1:10,] ensembl_gene_id chromosome_name struct_biotype exon_chrom_start 1 protein_coding 1542803 1542958 ENSG00000197530 2 protein_coding 1548674 1548942 ENSG00000197530 3 protein_coding 1549017 1549188 ENSG00000197530 4 protein_coding 1550038 1550144 ENSG00000197530 5 protein_coding 1550234 1550428 ENSG00000197530 6 protein_coding 1550529 1550671 ENSG00000197530 7 protein_coding 1551893 1551997 ENSG00000197530 8 protein_coding 1552080 1552242 ENSG00000197530 9 protein_coding 1552317 1552450 ENSG00000197530 10 protein_coding 1552539 1552687 ENSG00000197530 exon_chrom_end 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 1 > sessionInfo() R version 2.7.1 (2008-06-23) i386-apple-darwin8.10.1 locale: en_AU.UTF-8/en_AU.UTF-8/C/C/en_AU.UTF-8/en_AU.UTF-8 attached base packages: [1] stats graphics grDevices utils datasets methods base other attached packages: [1] biomaRt_1.14.0 RCurl_0.9-3 loaded via a namespace (and not attached): [1] XML_1.95-2 ------------------------------ Mark Robinson Epigenetics Laboratory, Garvan Bioinformatics Division, WEHI e: m.robinson at garvan.org.au e: mrobinson at wehi.edu.au p: +61 (0)3 9345 2628 f: +61 (0)3 9347 0852