subsampleCells.RdSubsets a categorical vector to include up to a maximum number of values for each category.
subsampleCells(clusters, subSamp = 25, seed = 5)vector of cluster labels (or any category) in factor or character format
maximum number of values for each category to subsample. Can be single integer for global subsampling, or a *named* vector corresponding to how many values to take from each category in clusters.
for reproducibility
returns a vector of TRUE / FALSE with a maximum of subSamp TRUE calls per category