Simulates cell type proportions under three scenarios.
gen_true_RHO(wRHO = 1, NN, QQ, RHO = NULL)A numeric matrix with QQ columns and NN rows
of cell type proportions per sample and cell type.
An integer taking values 1, 2, or 3 for one of the three
scenarios. For wRHO equal to 2 or 3, QQ needs to be
set to 3 cell types.
Positive integer for sample size.
Positive integer for number of cell types.
Default to NULL leads to simulating cell
type proportions. If a matrix of proportions is supplied,
this function will append row/column names.