src/test/scripts/functions/builtin/dbscanApply.R

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args<-commandArgs(TRUE)
library("Matrix")
library("dbscan")

X = as.matrix(readMM(paste(args[1], "A.mtx", sep="")));
Y = as.matrix(readMM(paste(args[2], "B.mtx", sep="")));
eps = as.double(args[3]);
minPts = as.integer(args[4]);
dbModel = dbscan(X, eps, minPts);

cleanMatr = matrix(, nrow = nrow(X), ncol = 3)
for(i in 1:nrow(X)) {
  if(dbModel$cluster[i] > 0) {
    cleanMatr[i,] = X[i,]
  }
}

cleanMatr = cleanMatr[rowSums(is.na(cleanMatr)) != ncol(cleanMatr),]

dbModelClean = dbscan(cleanMatr, eps, minPts);

Z = predict(dbModelClean, Y, data = cleanMatr);
Z[Z > 0] = 1;
writeMM(as(Z, "CsparseMatrix"), paste(args[5], "C", sep=""));