list containing the correct order
to output a set of probesets based on the fold change values for those
probesets. This is an internal function and is not intended to be called by
end users.
getOrder(fcList, order.by)list of named lists, generally produced by a call to
makeFCListvennSelectFC. The ordering for
probesets unique to a given comparison is simple, since there is only one
fold change to be considered. However, when there are more than one
comparison, we have to decide how the probesets should be ordered. The
choices available include those that seemed reasonable to me when I wrote
this function. Presumably there are other reasonable choices that may need
to be included.