rt.predict: rt.predict
In rsilvabioinfo/ProbMetab: Probabilistic annotation of LC-MS based metabolomics

Predict retention time from a given training set, and a matrix of compound descriptors.

1 2	rt.predict(testSet, predSet, descData = NULL, descList = NULL, columnPar = NULL, voidTime = NULL)

`testSet`	is a training set provided by user.
`predSet`	is a set of candidate compound to have their times predicted.
`descData`	is the user provided list of matrices of compound descriptors.
`descList`	is the optional user provided list of descriptors name calculated by rcdk package.
`columnPar`	is the optional user provided list of column parameters.
`voidTime`	column "dead" time.