Method x

plotter/image.go:115–120

(c int)

}

func (img *Image) x(c int) float64 {
	if c >= img.cols || c < 0 {
		panic("plotter/image: illegal range")
	}
	return img.xmin + float64(c)*img.dx
}

func (img *Image) y(r int) float64 {
	if r >= img.rows || r < 0 {