Picnic Colorscale

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

Section

"Picnic" is a diverging colorscale from blue through white to red — similar to RdBu but with a slightly different midpoint transition.

alias Plotly.{Figure, Heatmap}

z = for i <- 0..9, do: (for j <- 0..9, do: :math.sin(i / 3.0 + j / 5.0) * 10)

Figure.new()
|> Figure.add_trace(Heatmap.new(z: z, colorscale: "Picnic"))
|> Figure.update_layout(title: "Picnic Colorscale Heatmap")
|> Plotly.show()