Function ExampleImage

plotter/image_example_test.go:20–47

An example of embedding an image in a plot.

()

// An example of embedding an image in a plot.
func ExampleImage() {
	p := plot.New()
	p.Title.Text = "A Logo"

	// load an image
	f, err := os.Open("testdata/image_plot_input.png")
	if err != nil {
		log.Fatalf("error opening image file: %v\n", err)
	}
	defer f.Close()

	img, err := png.Decode(f)
	if err != nil {
		log.Fatalf("error decoding image file: %v\n", err)
	}

	p.Add(plotter.NewImage(img, 100, 100, 200, 200))

	const (
		w = 5 * vg.Centimeter
		h = 5 * vg.Centimeter
	)

	err = p.Save(w, h, "testdata/image_plot.png")
	if err != nil {
		log.Fatalf("error saving image plot: %v\n", err)
	}
}

// An example of embedding an image in a plot with non-linear axes.
func ExampleImage_log() {