When accessing JASPAR2014 database using TFBSTools using the getMatrixSet() function, I see that one needs to set the options of which PWMs to retrieve. For example
opts[["all_versions"]] <- TRUE siteList2 <- getMatrixSet(JASPAR2014, opts)
I'm not sure what the option all_versions refers to and I didn't find any information about this in the manual. In the examples, all_versions is set to TRUE but I'm not sure what this does. Can someone provide information about this option?
Thanks very much for your time and help,