[BioC] limma: makeContrasts() now accepts character vectors

[Gordon K Smyth]

In response to a number of requests, I have added a new argument to the function makeContrasts()
in the the limma package.  The new argument will accept a set of contrasts as a character vector,
thus facilitating the use of makeContrasts() within other functions and the automatic construction
of contrast expressions.

For example,

x <- c("A-B","C-(A+B)/2")
makeContrasts(contrasts=x,levels=c("A","B","C"))

The change is in limma 2.7.9 which will be available from CRAN in a couple of days.

Gordon

https://stat.ethz.ch/pipermail/bioconductor/2005-June/009263.html
https://stat.ethz.ch/pipermail/bioconductor/2006-March/012326.html
https://www.stat.math.ethz.ch/pipermail/bioconductor/2006-August/013844.html