Hi Dean, Here is an explanation I sent out a couple months ago. I'll be adding this to the wiki soon. If you already have loc files in place, the last paragraph may be most relevant to you. -------- The Bowtie and BWA tools are two of our tools that rely on an external list of something--in this case, of the indices of reference genomes required by Bowtie and BWA. We do not release these indices with Galaxy and instead you create them yourself (or you can download them in the case of Bowtie). These lists are stored in "loc" files. If these files are not present, the tool cannot be loaded into the browser. The loc files contain the name of each reference index and the location of it on your system. The loc files are stored in the tool-data directory. The Bowtie loc file should be called "bowtie_indices.loc". There are actually two for BWA, one for color indices and one for base indices. These need to be called "sequence_index_color.loc" and "sequence_index_base.loc". There are sample loc files for Bowtie and BWA which give more information about the format of the file. The sample files have the same names with ".sample" appended and are also in the tool-data directory. Bowtie offers numerous pre-built indices, which can be found at http://bowtie-bio.sourceforge.net/index.shtml . If you want to build indices not available pre-built, you can use Bowtie's bowtie-build command to do it. The BWA indices all need to be built individually, which can be done using the index command. See the Bowtie and BWA documentation for details on how to use these commands. Note that we did find that it is best to build the index on the same system where the tool would be running. Please let us know if you need anything else. Regards, Kelly On Nov 30, 2009, at 11:06 AM, Dean Snyder wrote:

The "Select a reference genome" popup in the NGS mapping section is empty for the Bowtie and BWA tools on my local Galaxy install (latest release). How can I populate it?

Dean A. Snyder Senior Programmer/Analyst Center for Inherited Disease Research (CIDR) Johns Hopkins School of Medicine Bayview Research Campus 333 Cassell Dr, Triad Bldg, Suite 2000 Baltimore, MD 21224 www.cidr.jhmi.edu cell:717 668-3048 office:410-550-4629

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