google_jsgraph

type BarGraph struct {

	// The graph data
	Data GraphData

	// Palette consists of the RGB colors to use in the bar graph.
	// e.g []String{"FF0000", "00FF00", "0000FF"}
	Palette []string
}

type Graph interface {

	// Emits the package names this graph depends on to the packages map.
	EmitPackages(packages map[string]struct{})

	// Emits the the code within the drawCharts() function that draws this
	// graph.
	EmitCode(name string, sb *strings.Builder)
}

type GraphData interface {

	// The number of X data points
	XLen() int

	// The number of Y data points
	YLen() int

	// The title of the X labels
	XTitle() string

	// Return 0-based label for X axis
	XLabel(x int) string

	// Return 0-based label for Y axis
	YLabel(y int) string

	// Return value at (x, y)
	Value(x, y int) float64
}

type PieGraph struct {

	// The graph data. YLen should be 1.
	Data GraphData

	// Optional: Palette consists of the RGB colors to use in the pie graph.
	// e.g []String{"FF0000", "00FF00", "0000FF"}. If omitted, Google chooses
	// the palette.
	Palette []string
}