google_graph

type BarGraph struct {
	// Palette consists of the RGB colors to use in the bar graph.
	// e.g []String{"FF0000", "00FF00", "0000FF"}
	Palette []string
	// a value of 10^Scale is one unit on bar graph.
	Scale int
}

type GraphData interface {
	// The number of data points.
	Len() int
	// The title
	Title() string
	// The label of the 0-based idx data point.
	Label(idx int) string
	// The value of the 0-based idx data point.
	Value(idx int) int64
}

type GraphData2D interface {
	// The number of X data points
	XLen() int
	// The number of Y data points
	YLen() int
	// 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) int64
}

type Grapher interface {
	GraphURL(gd GraphData) *url.URL
}

type Grapher2D interface {
	GraphURL2D(gd GraphData2D) *url.URL
}

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