Steve, >In general, what should the VisAD MathType be of a dataset that >comprises two Scalars and one Field? Should it be the Tuple > > (scalar1, scalar2, field) > >or the Tuple > > > ((scalar1, scalar2), field) I think one thing to consider is if (scalar1, scalar2) could be interpreted as having a default CoordinateSystem. In that case, I dont thing they should be broken out. TomR
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