show bar problem

[fengjiansunren]

What are you trying to do?

show bar

What did you do?

when the bar is too high, the legend will cover the bar

What actually happened?

[kuriankattukaren]

You can move the legend to the top left by setting:

p.Legend.Top = true
p.Legend.Left = true

where p is a plot.

[kuriankattukaren]

You can also refer to the barchart_example_test.go file. Here's a snippet from there:

    // Now, make a different type of BarChart.
    groupA := plotter.Values{20, 35, 30, 35, 27}
    groupB := plotter.Values{25, 32, 34, 20, 25}
    groupC := plotter.Values{12, 28, 15, 21, 8}
    groupD := plotter.Values{30, 42, 6, 9, 12}

    p, err := plot.New()
    if err != nil {
        log.Panic(err)
    }
    p.Title.Text = "Bar chart"
    p.Y.Label.Text = "Heights"

    w := vg.Points(8)

    barsA, err := plotter.NewBarChart(groupA, w)
    if err != nil {
        log.Panic(err)
    }
    barsA.Color = color.RGBA{R: 255, A: 255}
    barsA.Offset = -w / 2

    barsB, err := plotter.NewBarChart(groupB, w)
    if err != nil {
        log.Panic(err)
    }
    barsB.Color = color.RGBA{R: 196, G: 196, A: 255}
    barsB.Offset = w / 2

    barsC, err := plotter.NewBarChart(groupC, w)
    if err != nil {
        log.Panic(err)
    }
    barsC.XMin = 6
    barsC.Color = color.RGBA{B: 255, A: 255}
    barsC.Offset = -w / 2

    barsD, err := plotter.NewBarChart(groupD, w)
    if err != nil {
        log.Panic(err)
    }
    barsD.Color = color.RGBA{B: 255, R: 255, A: 255}
    barsD.XMin = 6
    barsD.Offset = w / 2

    p.Add(barsA, barsB, barsC, barsD)
    p.Legend.Add("A", barsA)
    p.Legend.Add("B", barsB)
    p.Legend.Add("C", barsC)
    p.Legend.Add("D", barsD)
    **p.Legend.Top = true**
    p.NominalX("Zero", "One", "Two", "Three", "Four", "",
        "Six", "Seven", "Eight", "Nine", "Ten")

    p.Add(plotter.NewGlyphBoxes())
    err = p.Save(300, 250, "testdata/barChart2.png")
    if err != nil {
        log.Panic(err)
    }

This code won't compile as its a snippet. However it shows how the legend is set.

[fengjiansunren]

You can move the legend to the top left by setting:

p.Legend.Top = true
p.Legend.Left = true

where p is a plot.

thanks

[fengjiansunren]

You can also refer to the barchart_example_test.go file. Here's a snippet from there:

`// Now, make a different type of BarChart. groupA := plotter.Values{20, 35, 30, 35, 27} groupB := plotter.Values{25, 32, 34, 20, 25} groupC := plotter.Values{12, 28, 15, 21, 8} groupD := plotter.Values{30, 42, 6, 9, 12}

p, err := plot.New()
if err != nil {
  log.Panic(err)
}
p.Title.Text = "Bar chart"
p.Y.Label.Text = "Heights"

w := vg.Points(8)

barsA, err := plotter.NewBarChart(groupA, w)
if err != nil {
  log.Panic(err)
}
barsA.Color = color.RGBA{R: 255, A: 255}
barsA.Offset = -w / 2

barsB, err := plotter.NewBarChart(groupB, w)
if err != nil {
  log.Panic(err)
}
barsB.Color = color.RGBA{R: 196, G: 196, A: 255}
barsB.Offset = w / 2

barsC, err := plotter.NewBarChart(groupC, w)
if err != nil {
  log.Panic(err)
}
barsC.XMin = 6
barsC.Color = color.RGBA{B: 255, A: 255}
barsC.Offset = -w / 2

barsD, err := plotter.NewBarChart(groupD, w)
if err != nil {
  log.Panic(err)
}
barsD.Color = color.RGBA{B: 255, R: 255, A: 255}
barsD.XMin = 6
barsD.Offset = w / 2

p.Add(barsA, barsB, barsC, barsD)
p.Legend.Add("A", barsA)
p.Legend.Add("B", barsB)
p.Legend.Add("C", barsC)
p.Legend.Add("D", barsD)
**p.Legend.Top = true**
p.NominalX("Zero", "One", "Two", "Three", "Four", "",
  "Six", "Seven", "Eight", "Nine", "Ten")

p.Add(plotter.NewGlyphBoxes())
err = p.Save(300, 250, "testdata/barChart2.png")
if err != nil {
  log.Panic(err)
}

This code won't compile as its a snippet. However it shows how the legend is set.`

thanks

[sbinet]

closing as fixed by https://github.com/gonum/plot/issues/657#issuecomment-751710856