public void TestGraph()
{
var option = new GraphOption {
xDelta = 20, yDelta = 0.5, yRatio = 0.5, SampleCount = 500
};
var graphPlotter = new GraphPlotter(option);
graphPlotter.Plot(Math.Tanh, new Interv(5, 102));
graphPlotter.Plot(x => Math.Cos(x) + 1, new Interv(10, 90), 3);
var graph = graphPlotter.GetGraphBlock();
var blockReference = new BlockReference(Point3d.Origin, graph);
var first = Interaction.GetPoint("\nSpecify extent point 1");
Interaction.InsertScalingEntity(blockReference, first, "\nSpecify extent point 2");
}