regPredictors: extract a subset of the expression matrix filtered by the...
In cmatKhan/bartNP: Execute BART on TF perturbation data

This function returns a matrix in dimensions samples, where samples are the columns of the NetProphetDataSet, x predictors, where predictors are a subset of the regulators. Any regulators which do not regulate a gene according to the regulation matrix are filtered out

regPredictors(x, ...)

## S4 method for signature 'NetProphetDataSet'
regPredictors(x, gene, transpose = TRUE)

`x`	a NetProphetDataSet object
`gene`	a gene which is in the rownames(x) and possibly in the colnames(regMatrix(x))
`transpose`	logical, default TRUE to return a sample x predictor matrix. NOTE that this is of particular interest when calling C++ (and maybe C?) functions as they store matricies differently than R and Fortran (row vs column wise). Best to check on these details if you think it might matter.