Plotinum Example

gistfile1.go

package main

import (
	"code.google.com/p/plotinum/plot"
	"code.google.com/p/plotinum/vg"
	"code.google.com/p/plotinum/vg/veceps"
	"math/rand"
)

func main() {
	// Get some data to plot.
	pts := make(plot.XYs, 10)
	for i := range pts {
		if i == 0 {
			pts[i].X = rand.Float64()
		} else {
			pts[i].X = pts[i-1].X + rand.Float64()
		}
		pts[i].Y = rand.Float64()
	}

	// Make an encapsulated postscript DrawArea
	w, h := vg.Inches(3), vg.Inches(2)
	da := plot.NewDrawArea(veceps.New(w, h, "test"), w, h)

	// Make our plot and set some labels.
	p, err := plot.New()
	if err != nil {
		panic(err)
	}
	p.Title.Text = "Plot Title"
	p.X.Label.Text = "X Values"
	p.Y.Label.Text = "Y Values"
	line := plot.Line{pts, plot.DefaultLineStyle}
	scatter := plot.Scatter{pts, plot.DefaultGlyphStyle}
	p.AddData(line, scatter)
	p.Legend.AddEntry("line", line, scatter)
	p.Legend.Top = true
	p.Draw(da)

	// Save to test.eps
	err = da.Canvas.(*veceps.Canvas).Save("test.eps")
	if err != nil {
		panic(err)
	}
}