Function ExampleSankey_grouped

plotter/sankey_example_test.go:144–407

ExampleSankey_grouped creates a sankey diagram with grouped flows. The output can be found at https://github.com/gonum/plot/blob/master/plotter/testdata/sankeyGrouped_golden.png.

()

// ExampleSankey_grouped creates a sankey diagram with grouped flows.
// The output can be found at https://github.com/gonum/plot/blob/master/plotter/testdata/sankeyGrouped_golden.png.
func ExampleSankey_grouped() {
	p := plot.New()
	c := vgimg.New(vg.Points(300), vg.Points(180))
	dc := draw.New(c)

	// Define the stock categories
	const (
		treeType int = iota
		consumer
		fate
	)
	categoryLabels := []string{"Tree type", "Consumer", "Fate"}

	flows := []plotter.Flow{
		{
			SourceCategory:   treeType,
			SourceLabel:      "LargeLargeLargeLargeLargeLargeLargeLargeLarge",
			ReceptorCategory: consumer,
			ReceptorLabel:    "Mohamed",
			Group:            "Apples",
			Value:            5,
		},
		{
			SourceCategory:   treeType,
			SourceLabel:      "LargeLargeLargeLargeLargeLargeLargeLargeLarge",
			ReceptorCategory: consumer,
			ReceptorLabel:    "Mohamed",
			Group:            "Dates",
			Value:            3,
		},
		{
			SourceCategory:   treeType,
			SourceLabel:      "Small",
			ReceptorCategory: consumer,
			ReceptorLabel:    "Mohamed",
			Group:            "Lychees",
			Value:            2,
		},
		{
			SourceCategory:   treeType,
			SourceLabel:      "LargeLargeLargeLargeLargeLargeLargeLargeLarge",
			ReceptorCategory: consumer,
			ReceptorLabel:    "Sofia",
			Group:            "Apples",
			Value:            3,
		},
		{
			SourceCategory:   treeType,
			SourceLabel:      "LargeLargeLargeLargeLargeLargeLargeLargeLarge",
			ReceptorCategory: consumer,
			ReceptorLabel:    "Sofia",
			Group:            "Dates",
			Value:            4,
		},
		{
			SourceCategory:   treeType,
			SourceLabel:      "Small",
			ReceptorCategory: consumer,