Basic 2D Histogram Contour

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

Section

Histogram2dcontour.new(x: [...], y: [...]) creates a 2D kernel density contour plot. Like Histogram2d but draws contour lines instead of filled squares. Both x and y must have the same length (one point per observation).

alias Plotly.{Figure, Histogram2dcontour}

:rand.seed(:exsss, {1, 2, 3})

gen = fn n ->
  for _ <- 1..n do
    (for _ <- 1..12, do: :rand.uniform()) |> Enum.sum() |> Kernel.-(6.0)
  end
end

n = 300
x = gen.(n)
y = gen.(n)

Figure.new()
|> Figure.add_trace(Histogram2dcontour.new(x: x, y: y))
|> Figure.update_layout(title: "Basic 2D Histogram Contour")
|> Plotly.show()