Add a Logo

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

Section

layout.images accepts a list of image overlay maps. Each image needs a source URL and position/size specified in "paper" coordinates (0–1 relative to the plot area) or axis coordinates.

Key fields:

• source — publicly accessible image URL
• xref / yref — "paper" for plot-relative, or "x" / "y" for axis coords
• x / y — position of the anchor point
• sizex / sizey — width and height in coordinate units
• xanchor / yanchor — which corner of the image the x/y refers to
• layer — "above" (default) or "below" traces

alias Plotly.{Figure, Scatter}

Figure.new()
|> Figure.add_trace(Scatter.new(
  x: [1, 2, 3, 4, 5],
  y: [2, 4, 1, 5, 3],
  mode: "lines+markers",
  name: "Series A"
))
|> Figure.update_layout(
  title: "Chart with Logo Overlay",
  images: [%{
    source: "https://placehold.co/120x40/4B9CD3/white?text=MyLogo",
    xref: "paper",
    yref: "paper",
    x: 1.0,
    y: 1.05,
    sizex: 0.15,
    sizey: 0.1,
    xanchor: "right",
    yanchor: "bottom",
    layer: "above"
  }]
)
|> Plotly.show()