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Don't think so. That's the way the documentation says to do it, and it doesn't work at all if I don't do it that way. Try it yourself!
The following code: grid1 = ConstantArray[0.0, {8, 8}]; ListContourPlot[grid1, PlotLegends -> Automatic ] ...produces a blank plot, as it should, but throws an error `MapThread is not a Graphics primitive or directive.`...
Workaround, sort of: Some things, such as GraphDistance, seem to work correctly if the EdgeWeight property of the *Graph* is set to the list of weights. This is still painful, however, as graph manipulation functions such as EdgeAdd, EdgeDelete, and...