Auto y range does not play well with annotations

[johannes-wolf]

#import "@preview/cetz:0.2.2"
#import "@preview/cetz:0.2.2": canvas, plot, draw
#import "@preview/statastic:0.1.0": arrayMedian, arrayStd

#let style = (stroke: black, fill: rgb(0, 0, 200, 75))

#let scores = (10, 43, 55, 96, 200, 370)
#let median = arrayMedian(scores)
#let mean = (scores.map(score => score).sum()) / scores.len()
#let stddev = arrayStd(scores)

#let gaussian(x) = (
  1 / (stddev * calc.sqrt(2 * calc.pi)) *
  calc.exp(-(calc.pow(x - mean, 2)) / (2 * calc.pow(stddev, 2)))
)

#canvas({
  plot.plot(
      size: (13,10),
      y-tick-step: none,
      y-min: 0,    // Without this, the range gets set to strange values.
      y-max: 4e-3, 
    {

    plot.add(
      hypograph: true,
      style: style,
      domain: (0, 500), x => gaussian(x)
    )
      
    plot.add-vline(
      median,
    )
    
    plot.annotate({
      draw.content((median, 0), $pi$, anchor: "west")
    })
  })
})

Measuring the content in non-plot dimensions might cause this problem!