The idwas package. Note this package depends on the pRRophetic package, which is available for download here: https://osf.io/yatu3/
Note that there are a number of dependencies, which can be installed with the following commands from the R prompt:
> source("http://bioconductor.org/biocLite.R")
> biocLite(c("car", "ridge", "preprocessCore", "genefilter", "sva")) # pRRophetic dependencies
Then, to install the idwas package, navigate to the file where you have downloaded the package and execute the following command from the command prompt:
> R CMD INSTALL idwas_0.0.0.9000.tar.gz