Circle

Mix.install([
  {:plotly_ex, "~> 0.3"},
  {:kino, "~> 0.18"}
])

Section

Draw circles in paper coordinates (0–1 on both axes, independent of data scale) using xref: "paper" and yref: "paper". Also demonstrates an unfilled circle (no fillcolor) versus a filled one.

alias Plotly.{Figure, Scatter}

Figure.new()
|> Figure.add_trace(Scatter.new(x: [1.5, 4.5], y: [0.75, 0.75], mode: "text", text: ["Unfilled", "Filled"]))
|> Figure.update_layout(
  title: "Circle Shapes",
  xaxis: %{range: [0, 6]},
  yaxis: %{range: [0, 1.5]},
  shapes: [
    %{
      type: "circle",
      xref: "x",
      yref: "y",
      x0: 1,
      y0: 0.25,
      x1: 2,
      y1: 1.25,
      line: %{color: "RoyalBlue"}
    },
    %{
      type: "circle",
      xref: "x",
      yref: "y",
      x0: 3,
      y0: 0.25,
      x1: 5,
      y1: 1.25,
      line: %{color: "LightSeaGreen"},
      fillcolor: "PaleTurquoise"
    }
  ]
)
|> Plotly.show()