Add Text Template in Pie Chart

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

Section

texttemplate controls the text shown inside or outside each slice of a Pie chart. Available tokens: %{label}, %{value}, %{percent} (formatted as a percentage string, e.g. "25%"). Combine with textposition: "inside" to display the labels within each slice.

alias Plotly.{Figure, Pie}

Figure.new()
|> Figure.add_trace(
  Pie.new(
    labels: ["Apples", "Bananas", "Cherries", "Dates"],
    values: [40, 25, 20, 15],
    texttemplate: "%{label}: %{value} (%{percent})",
    textposition: "inside"
  )
)
|> Figure.update_layout(title: "Pie Chart with Text Template")
|> Plotly.show()