Hi Elad, Start with the tool "FASTA manipulation -> Compute sequence length" to generate a length value for each sequence. Next, use "Statistics -> Summary Statistics for any numerical column" on the result to generate specific R function statistics (see the tool form for which and how to enter the expression). To visualize the distribution, use "Graph/Display Data -> Histogram of a numeric column". Hopefully this helps. Best, Jen Galaxy team On 3/15/12 9:24 AM, Elad Firnberg wrote:

Hi,

Is there a tool or easy way to obtain a read length distribution on a set of 454 reads in fasta format? I can't seem to find such a tool in Galaxy.

Thank you, Elad

___________________________________________________________ The Galaxy User list should be used for the discussion of Galaxy analysis and other features on the public server at usegalaxy.org. Please keep all replies on the list by using "reply all" in your mail client. For discussion of local Galaxy instances and the Galaxy source code, please use the Galaxy Development list:

http://lists.bx.psu.edu/listinfo/galaxy-dev

To manage your subscriptions to this and other Galaxy lists, please use the interface at:

http://lists.bx.psu.edu/