Multiple 3D Subplots

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

Section

3D traces (Surface, Scatter3d, Mesh3d) use scene: instead of xaxis:/yaxis:. The first scene is "scene", the second is "scene2", etc. layout.scene and layout.scene2 each accept a domain: %{column: 0|1} to assign to grid columns.

alias Plotly.{Figure, Surface}

# Simple z-surfaces
n = 20
xs = Enum.map(0..(n - 1), &(&1 / (n - 1) * 4 - 2))
z1 = for x <- xs, do: (for y <- xs, do: :math.sin(:math.sqrt(x * x + y * y)))
z2 = for x <- xs, do: (for y <- xs, do: :math.cos(:math.sqrt(x * x + y * y)))

Figure.new()
|> Figure.add_trace(Surface.new(z: z1, colorscale: "Viridis", showscale: false))
|> Figure.add_trace(Surface.new(z: z2, colorscale: "RdBu", showscale: false, scene: "scene2"))
|> Figure.update_layout(
  title: "Multiple 3D Subplots",
  grid: %{rows: 1, columns: 2},
  scene:  %{domain: %{column: 0}},
  scene2: %{domain: %{column: 1}}
)
|> Plotly.show()