getss: Obtain the co-location matrix
In shibiaowan/SHARP: hyperfast and accurate single-cell RNA-Seq data clustering

This function is to obtain the weighted co-location matrix from the clustering result for following ensemble clustering.

1	getss(pind, R, x, w1)

rowColor

the clustering results by some clustering algorithms

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 x = as.vector(sapply(1:C, function(i){paste(nC[,i], '_', i, sep = '')}))#convert the matrix (N*C) to vector (concatenating them)
 R = unique(x)#all unique labels
 alls = apply(cb, 2, getss, R = R, x = x, w1 = w1)#calculate the weight s for all combinations