Using Dates on the X-Axis

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

Section

Pass ISO 8601 date strings ("YYYY-MM-DD") as x values. Set xaxis.type: "date" to ensure plotly parses them as dates even when there are only a few points. Plotly formats tick labels automatically and enables date-aware zoom/pan.

alias Plotly.{Figure, Scatter}

x = ["2013-10-04", "2013-11-05", "2013-12-06", "2014-01-07", "2014-02-08",
     "2014-03-09", "2014-04-10"]
y = [1, 3, 6, 4, 7, 5, 8]

Figure.new()
|> Figure.add_trace(Scatter.new(x: x, y: y, mode: "lines+markers"))
|> Figure.update_layout(
  title: "Using Dates on the X-Axis",
  xaxis: %{type: "date"}
)
|> Plotly.show()