Hi Ilya, Something similar to this is planned, but directly referencing location files is being deprecated in favor of using the tool_data_tables mechanism. The validator implementation does not yet support data tables, but will be enhanced in the future. Additionally, the selection functionality would ideally be filtered based upon the dbkeys, instead of just using validators. I plan to address these usability issues in the coming weeks. If you have code which already handles these concerns, we would be pleased to have a look; thanks again for these suggestions and keep them coming. Thanks for using Galaxy, Dan On Sep 28, 2011, at 7:13 PM, Chorny, Ilya wrote:

To prevent user error in mixing genomes, would you be interested in a feature in which the unified genotyper choses the genome in a fashion similar to how samtools know which which genome to use?

<when value="cached"> <param name="input1" type="data" format="sam" metadata_name="dbkey" label="SAM File to Convert"> <validator type="unspecified_build" /> <validator type="dataset_metadata_in_file" filename="sam_fa_indices.loc" metadata_name="dbkey" metadata_column="1" message="Sequences are not currently available for the specified build." line_startswith="index" /> </param> </when>

Ilya Chorny Ph.D. Bioinformatics Scientist I Illumina, Inc. 9885 Towne Centre Drive San Diego, CA 92121 Work: 858.202.4582 Email: ichorny@illumina.com Website: www.illumina.com