}
if (arg.hasCommand("submatrix"))
{
IDoubleArray C = doublesNew.fromFile(arg.getArgument("submatrix", 0));
IIntArray S = intseq.loadIntSequence(arg.getArgument("submatrix", 1));
C = C.view(S.getArray(), S.getArray());
doubles.writeMatrixSparse(C, System.out);
}
if (arg.hasCommand("populousSet"))
{
IDoubleArray C = doublesNew.fromFile(arg.getArgument("populousSet", 0));