What are you trying to do?

Just trying to make a simple line plot. However, depending on the axis limits, the rendered plot does not fit onto the image and exceeds its bounds.

What did you do?

Minimal reproducing example:

package main

import (
	"math/rand"

	"gonum.org/v1/plot"
	"gonum.org/v1/plot/plotter"
)

func main() {
	p := plot.New()

	p.Legend = plot.NewLegend()

	length := 70
	xy := make(plotter.XYs, length)
	for i := 0; i < length; i++ {
		xy[i] = plotter.XY{X: float64(i), Y: rand.Float64()}
	}

	lines, err := plotter.NewLine(xy)
	if err != nil {
		panic(err)
	}

	p.Add(lines)
	p.Legend.Add("Legend entry", lines)

	p.Save(600, 400, "test.png")
}

What did you expect to happen?

The plot nicely fills the image.

What actually happened?

The plot is partially outside the image bounds:

What version of Go and Gonum/plot are you using?

go version go1.20 windows/amd64
plot vrsion v0.12.0

Does this issue reproduce with the current master?

Yes.