geom_ribbon.md

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title: ribbon author: Daniel Jones part: Geometry order: 1014 ...

Draw a ribbon bounded above and below by ymin and ymin, respectively.

Aesthetics

• x: X-axis position
• ymin: Y-axis lower bound.
• ymax: Y-axis upper bound.
• color (optional): Group categorically by color.

Examples

using Gadfly, DataFrames

Gadfly.set_default_plot_size(14cm, 8cm)

xs = 0:0.1:20

df_cos = DataFrame(
    x=xs,
    y=cos(xs),
    ymin=cos(xs) .- 0.5,
    ymax=cos(xs) .+ 0.5,
    f="cos"
)

df_sin = DataFrame(
    x=xs,
    y=sin(xs),
    ymin=sin(xs) .- 0.5,
    ymax=sin(xs) .+ 0.5,
    f="sin"
)

df = vcat(df_cos, df_sin)
p = plot(df, x=:x, y=:y, ymin=:ymin, ymax=:ymax, color=:f, Geom.line, Geom.ribbon)