Categorical Dot Plot

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

Section

A categorical dot plot uses Scatter with categorical y-axis values. Each category appears as a row; multiple traces encode different groups with different colors.

alias Plotly.{Figure, Scatter}

countries = ["Japan", "China", "Russia", "Brazil", "USA"]
female = [19, 24, 30, 37, 46]
male = [25, 28, 33, 39, 48]

Figure.new()
|> Figure.add_trace(
  Scatter.new(
    x: female,
    y: countries,
    mode: "markers",
    name: "Female",
    marker: %{color: "pink", size: 12}
  )
)
|> Figure.add_trace(
  Scatter.new(
    x: male,
    y: countries,
    mode: "markers",
    name: "Male",
    marker: %{color: "blue", size: 12}
  )
)
|> Figure.update_layout(
  title: "Categorical Dot Plot",
  xaxis: %{title: "Life Expectancy at Birth (years)"}
)
|> Plotly.show()