private void drawPlot(Func <double, double> func, double x0, double h, int count)
{
var polynomial = NewtonMethod.Interpolate(func, x0, h, count);
//Отступ, чтобы отрезок интерполяции занимал 75% графика (отступы - 12.5% каждый)
double offsetNodes = count * 0.125;
double left = x0 - offsetNodes * h;
double right = x0 + (offsetNodes + count - 1) * h;
if (left > right)
{
double temp = left;
left = right;
right = temp;
}
var myModel = new PlotModel {
Title = "График"
};
myModel.Series.Add(new FunctionSeries(func, left, right, 0.1, "f(x)"));
myModel.Series.Add(new FunctionSeries(polynomial.ValueAt, left, right, 0.1, "P(x)"));
var scatterSeries = new ScatterSeries {
MarkerType = MarkerType.Circle
};
for (int i = 0; i < count; i++)
{
double xn = x0 + i * h;
scatterSeries.Points.Add(new ScatterPoint(xn, func(xn), 5, 255));
}
myModel.Series.Add(scatterSeries);
plotView.Model = myModel;
}