%select graph.id, histogram(c_coeff(vertex).c_coeff, [0, 0.16, 0.3, 0.33 0.67, 1.0])
%from graph(*) group by graph.id

vertex@* = VertexOperator([], *);
c_coeff@* = CCoeffOperator([vertex@local]);
histogram@* = HistogramOperator([c_coeff@local], c_coeff, Double, [0, 0.16, 0.3, 0.33 0.67, 1.0]);
union@1 = UnionOperator([histogram@*]);
histogramMerge@1 = HistogramMergeOperator([union@local]);