The a50 package

[Tags: gpl, program]

a50 - a simple tool for graphing genome coverage and fragmentation.

Reads files of contigs, and compares them by plotting each as a line in a graph. The x-axis represents contig number, the y-axis represents total (cumulative) size. An ideal assembly contains a few, large contigs, thus this curve should rise steeply, and stop early (but at the expected genome size). Conversely, a poor assembly consisting of many small fragments will have a less steep curve extending far to the right.

The graphs produced by a50 gives a simple and easy to grasp comparison between assemblies, and yet produces a more detailed and informative view than the usual metrics like largest contig size or N50.

The Darcs repository is at


Versions0.2, 0.4, 0.5
Change logNone available
Dependenciesbase (>=3 && <5), bio (>0.4), cmdargs (>=0.5), containers, directory, process
AuthorKetil Malde
MaintainerKetil Malde <>
UploadedWed Oct 20 10:15:57 UTC 2010 by KetilMalde
Downloads646 total (45 in last 30 days)
StatusDocs not available [build log]
All reported builds failed as of 2015-05-22 [all 2 reports]


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