func TestPrintPdfMethods(t *testing.T) {
fs := make([]plotter.XYs, 4)
labels := make([]string, 4)
pdf1 := NewCustomPdfZ(quad.NewSimpsonsRule(), 1e-10, 1e-10, 1e-6, 1e-6, 15, 50)
fs[0] = plotutil.CreatePlotData(func(x float64) float64 {
p, _ := Value(pdf1, x, 0.5, 0.5, 0.0, 1.0)
return p
}, -5.0, 5.0, 100)
labels[0] = "Simpson"
// pdf2 := NewCustomPdfZ(quad.NewQAG(), 1e-14, 1e-10, 45, 50)
pdf2 := NewPdfZ()
fs[1] = plotutil.CreatePlotData(func(x float64) float64 {
p, _ := Value(pdf2, x, 0.5, 0.5, 0.0, 1.0)
return p
}, -5.0, 5.0, 100)
labels[1] = "Default QAG - GK21"
pdf3 := NewCustomPdfZ(quad.NewCustomQAG(quad.NewGaussKronrod61()), 1e-14, 1e-10, 1e-6, 1e-6, 45, 50)
fs[2] = plotutil.CreatePlotData(func(x float64) float64 {
p, _ := Value(pdf3, x, 0.5, 0.5, 0.0, 1.0)
return p
}, -5.0, 5.0, 100)
labels[2] = "Custom QAG - GK61"
pdf4 := NewPdfBelov()
fs[3] = plotutil.CreatePlotData(func(x float64) float64 {
p, _ := Value(pdf4, x, 0.5, 0.5, 0.0, 1.0)
return p
}, -5.0, 5.0, 100)
labels[3] = "Two integrands"
plotutil.CreatePlot(fs, labels, map[string]string{"Title": "alpha_0.5_integrand_comp"})
}
func TestRangeAlpha2(t *testing.T) {
fs := make([]plotter.XYs, 3)
labels := make([]string, 3)
pdf := NewPdfZ()
alphas := [...]float64{1.0, 1.01, 1.01}
for i, alpha := range alphas {
fs[i] = plotutil.CreatePlotData(func(x float64) float64 {
p, _ := Value(pdf, x, alpha, 0.5, 0.0, 1.0)
return p
}, -15.0, 15.0, 200)
labels[i] = fmt.Sprintf("alpha = %g", alpha)
}
plotutil.CreatePlot(fs, labels, map[string]string{"Title": "alpha_1ish_plot_beta=0.5"})
}
func TestRelError(t *testing.T) {
fs := make([]plotter.XYs, 1)
labels := make([]string, 1)
alpha := 1.9
beta := 0.25
pdfZ := NewPdfZ()
pdfB := NewPdfBergstrom()
fs[0] = plotutil.CreatePlotData(func(x float64) float64 {
p, _ := Value(pdfZ, x, alpha, beta, 0.0, 1.0)
pb, _ := Value(pdfB, x, alpha, beta, 0.0, 1.0)
return (p - pb) / p
}, 10, 100, 20)
labels[0] = "Relative Error"
plotutil.CreatePlot(fs, labels, map[string]string{"Title": "bergstrom_rel_error_alpha_0.5"})
}
func TestRangeBeta(t *testing.T) {
fs := make([]plotter.XYs, 6)
labels := make([]string, 6)
alpha := 0.5
beta_min := -0.75
dbeta := 0.25
pdf := NewPdfZ()
for i := 0; i < 6; i++ {
beta := beta_min + float64(i)*dbeta
fs[i] = plotutil.CreatePlotData(func(x float64) float64 {
p, _ := Value(pdf, x, alpha, beta, 0.0, 1.0)
return p
}, -15.0, 15.0, 200)
labels[i] = fmt.Sprintf("alpha = %g", alpha)
}
plotutil.CreatePlot(fs, labels, map[string]string{"Title": "alpha_plot_alpha=0.5"})
}
func TestRangeAlpha(t *testing.T) {
fs := make([]plotter.XYs, 6)
labels := make([]string, 6)
alpha_min := 0.5
dalpha := 0.25
pdf := NewPdfZ()
// pdf := NewCustomPdf(quad.NewCustomQAG(quad.NewGaussKronrod61()), 1e-14, 1e-10, 45, 50)
//pdf := NewCustomPdf(quad.NewSimpsonsRule(), 1e-14, 1e-10, 15, 50)
for i := 0; i < 6; i++ {
alpha := alpha_min + float64(i)*dalpha
fs[i] = plotutil.CreatePlotData(func(x float64) float64 {
p, _ := Value(pdf, x, alpha, 0.5, 0.0, 1.0)
return p
}, -15.0, 15.0, 200)
labels[i] = fmt.Sprintf("alpha = %g", alpha)
}
plotutil.CreatePlot(fs, labels, map[string]string{"Title": "alpha_plot_beta=0.5"})
}