src/test/scripts/functions/transform/TransformFederatedEncodeDecode.dml

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F1 = federated(type="frame", addresses=list($in_AU, $in_AL, $in_BU, $in_BL), ranges=
  list(list(0,0), list($rows / 2, $cols / 2), # AUpper range
    list($rows / 2, 0), list($rows, $cols / 2), # ALower range
    list(0, $cols / 2), list($rows / 2, $cols), # BUpper range
    list($rows / 2, $cols / 2), list($rows, $cols))); # BLower range
jspec = read($spec_file, data_type="scalar", value_type="string");

[X, M] = transformencode(target=F1, spec=jspec);

A = aggregate(target=X[,1], groups=X[,2], fn="count");
Ag = cbind(A, seq(1,nrow(A)));

F2 = transformdecode(target=Ag, spec=jspec, meta=M);

write(F2, $out, format=$format);