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Dear Shiliang, please send us an R script that allows us to reproduce your error. "Wrong information" is too unconcrete, I am afraid to say. Also, please use the most recent version biomaRt 1.7.3 from http://bioconductor.org/packages/1.9/bioc Best wishes Wolfgang -- ------------------------------------------------------------------ Wolfgang Huber EBI/EMBL Cambridge UK http://www.ebi.ac.uk/huber swang wrote: > Dear list: > > I am a newbie for R language, I just wonder that how to use biomaRt to > retrieve all locusIDs between two SNPs from ensembl using biomaRt package. > I tried to use getBM(), getSequence(), getGene(), but it always give me > wrong information. > > also I have question about enviroment that I scratched the statement from > review of biomaRt 1.6.0 version into R(version 2.3.1) > >> mart = useMart("snp", dataset = "hsapiens_snp") > Checking attributes and filters ... ok >> >> getSNP(chromosome = 8, start = 148350, end = 148612, mart = mart) > Error in getBM(attributes = attributes, filters = c("chr_name", snpstart, : > > filter: snp_chrom_start not found, please use the function > 'listFilters' to get valid filter names >> getSequence(chromsome=5, start=240457, end= > 356304,type="ensembl",seqType="cdna",mart=mart) > Error in getSequence(chromsome = 5, start = 240457, end = 356304, type = > "ensembl", : > unused argument(s) (chromsome ...) > Is there anybody who can help me out of this situation. > > Thanks > > Shiliang >