Bar Chart with Line Plot

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

Section

Combine Bar and Scatter traces on the same figure. Use a secondary y-axis (yaxis: "y2") when the scales differ. Set yaxis2: %{overlaying: "y", side: "right"} in layout to overlay the second axis.

alias Plotly.{Figure, Bar, Scatter}

x = ["Jan", "Feb", "Mar", "Apr", "May", "Jun"]

Figure.new()
|> Figure.add_trace(
  Bar.new(
    x: x,
    y: [20, 14, 23, 18, 30, 25],
    name: "Bar Data"
  )
)
|> Figure.add_trace(
  Scatter.new(
    x: x,
    y: [19, 16, 21, 20, 28, 24],
    mode: "lines+markers",
    name: "Line Data",
    yaxis: "y2"
  )
)
|> Figure.update_layout(
  title: "Bar Chart with Line Plot",
  yaxis: %{title: "Bar Values"},
  yaxis2: %{overlaying: "y", side: "right", title: "Line Values"}
)
|> Plotly.show()