Use plotinum to draw figures with log-scale y-axis

Does anyone have experience using plotinum to draw figures with log-scaled y-axis?

I do not find such examples in plotinum wiki: https://code.google.com/p/plotinum/wiki/Examples

Based on the answer of AlexAtNet, I can draw histograms (as well as other plots) with y-axis in log-scale.

I share my code snippet here, because plot.LogScale panics if any data point has y==0, which, however, might be hard to avoid with real data. My solution is simply implementing my own LogScale.

func plotHist(data plotter.Values, title, xLabel, yLabel, imageFile string) {
	log.Printf("Plotting to %s ...", imageFile)

	p, e := plot.New()
	if e != nil {
		log.Fatalf("plot.New failed: %v", e)
	}

	h, e := plotter.NewHist(data, 50)
	if e != nil {
		log.Fatalf("plotter.NewHist failed: %v", e)
	}
	p.Add(h)

	p.Title.Text = title
	p.X.Label.Text = xLabel
	p.Y.Label.Text = yLabel
	p.Y.Min = 1
	_, _, _, p.Y.Max = h.DataRange()
	p.Y.Scale = LogScale
	p.Y.Tick.Marker = plot.LogTicks
	p.Add(plotter.NewGrid())

	if e := p.Save(9, 6, imageFile); e != nil {
		log.Fatalf("Cannot save image to %s: %v", imageFile, e)
	}

	log.Printf("Done plotting to %s.", imageFile)
}

func LogScale(min, max, x float64) float64 {
	logMin := ln(min)
	return (ln(x) - logMin) / (ln(max) - logMin)
}

func ln(x float64) float64 {
	if x <= 0 {
		x = 0.01
	}
	return math.Log(x)
}

An output image looks like this:

It seems that an appropriate way for that is to use the property Scale of the y-axis as follows:

p, err := plot.New()
p.Y.Min = 0.001
p.Y.Max = 100
p.Y.Scale = LogScale

See also:

• http://godoc.org/code.google.com/p/plotinum/plot#LogScale
• http://godoc.org/code.google.com/p/plotinum/plot#Axis