Hi BioC developers,

I have just submitted a package for plotting sequence logos, as introduced
by Schneider and Stephens (1990). These graphical representations of
sequence alignments consist of stacks of letters, one stack for each
position in the alignment, with the overall height of the stack proportional
to the information content at that position and the height of the letters in
the stack proportional to their relative frequency.

Currently, the input to the seqLogo() function consists of the position
weight matrix corresponding to the alignment, giving the relative frequency
of each letter at each of the positions. Currently, only DNA sequences are
supported, but it would be straightforward to extend the package to amino
acid sequences.

The source package can be installed from the repository "
http://bioconductor.org/packages/2.0/bioc/"; a Windows binary can be found
at "http://cosmoweb.berkeley.edu/software.html".

Any feedback and comments are more than welcome.

Best,

Oliver

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