3D Line Plot

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

Section

Scatter3d.new(mode: "lines") draws a connected line in 3D space. line: %{color:, width:} styles the line. Parametric curves (helix, Lissajous, etc.) are natural candidates for 3D line plots.

alias Plotly.{Figure, Scatter3d}

n = 100
t = Enum.map(0..(n - 1), &(&1 / (n - 1) * 4 * :math.pi()))

Figure.new()
|> Figure.add_trace(
  Scatter3d.new(
    x: Enum.map(t, &:math.cos/1),
    y: Enum.map(t, &:math.sin/1),
    z: Enum.map(t, &(&1 / (4 * :math.pi()))),
    mode: "lines",
    line: %{color: "blue", width: 3}
  )
)
|> Figure.update_layout(
  title: "3D Line Plot — Helix",
  scene: %{
    xaxis: %{title: "X"},
    yaxis: %{title: "Y"},
    zaxis: %{title: "Z"}
  }
)
|> Plotly.show()