Graph and Axes Titles

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

Section

Set the plot title via layout.title. Set axis titles via xaxis.title and yaxis.title. Both accept a plain string or a map with text and font for styled titles.

alias Plotly.{Figure, Scatter}

Figure.new()
|> Figure.add_trace(
  Scatter.new(
    x: [1, 2, 3, 4, 5],
    y: [1, 6, 3, 6, 1],
    mode: "lines+markers"
  )
)
|> Figure.update_layout(
  title: "Plot Title",
  xaxis: %{title: "x Axis Title"},
  yaxis: %{title: "y Axis Title"}
)
|> Plotly.show()

Styled with font:

Figure.new()
|> Figure.add_trace(Scatter.new(x: [1, 2, 3], y: [4, 5, 4], mode: "lines"))
|> Figure.update_layout(
  title: %{text: "Styled Title", font: %{family: "Courier New, monospace", size: 24, color: "#7f7f7f"}},
  xaxis: %{title: %{text: "x Axis", font: %{family: "Courier New, monospace", size: 18, color: "#7f7f7f"}}},
  yaxis: %{title: %{text: "y Axis", font: %{family: "Courier New, monospace", size: 18, color: "#7f7f7f"}}}
)
|> Plotly.show()