Bar Chart with Rotated Labels

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

Section

Use xaxis.tickangle to rotate tick labels. Negative values rotate clockwise (e.g. -45 tilts labels 45° to the right). This prevents overlapping when x categories are long strings.

alias Plotly.{Figure, Bar}

months = ["January", "February", "March", "April", "May", "June",
          "July", "August", "September", "October", "November", "December"]

Figure.new()
|> Figure.add_trace(Bar.new(x: months, y: [20, 14, 25, 16, 18, 22, 19, 15, 12, 16, 14, 17], name: "Primary Product", marker: %{color: "rgba(55, 128, 191, 0.7)"}))
|> Figure.add_trace(Bar.new(x: months, y: [19, 14, 22, 14, 16, 19, 17, 14, 10, 12, 12, 16], name: "Secondary Product", marker: %{color: "rgba(219, 64, 82, 0.7)"}))
|> Figure.update_layout(
  title: "Bar Chart with Rotated X Labels",
  xaxis: %{tickangle: -45},
  barmode: "group"
)
|> Plotly.show()