Merge pull request #1325 from Mattriks/Segment_docs

Gallery example for Geom.segment
GiovineItalia · Oct 7, 2019 · f8b63b0 · f8b63b0
2 parents aa4855c + 36cadac
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diff --git a/docs/Project.toml b/docs/Project.toml
@@ -2,6 +2,7 @@
 CSV = "336ed68f-0bac-5ca0-87d4-7b16caf5d00b"
 Cairo = "159f3aea-2a34-519c-b102-8c37f9878175"
 Colors = "5ae59095-9a9b-59fe-a467-6f913c188581"
+ColorSchemes = "35d6a980-a343-548e-a6ea-1d62b119f2f4"
 Compose = "a81c6b42-2e10-5240-aca2-a61377ecd94b"
 DataFrames = "a93c6f00-e57d-5684-b7b6-d8193f3e46c0"
 Distributions = "31c24e10-a181-5473-b8eb-7969acd0382f"

diff --git a/docs/src/gallery/geometries.md b/docs/src/gallery/geometries.md
@@ -422,6 +422,21 @@ p2 = plot(vcat(Db...), x = :x, y=:ymax, ymin = :ymin, ymax = :ymax,
 hstack(p1,p2)
 ```
 
+## [`Geom.segment`](@ref)
+```@example
+using Gadfly, DataFrames, ColorSchemes
+set_default_plot_size(14cm, 14cm)
+n = 1000
+x, y = cumsum(randn(n)), cumsum(randn(n))
+D = DataFrame(x1=x[1:end-1], y1=y[1:end-1], x2=x[2:end], y2=y[2:end], colv=1:n-1)
+palettef(c::Float64) = get(ColorSchemes.viridis, c)
+
+plot(D, x=:x1, y=:y1, xend=:x2, yend=:y2, 
+     color = :colv, Geom.segment, Coord.cartesian(aspect_ratio=1.0),
+     Scale.color_continuous(colormap=palettef, minvalue=0, maxvalue=1000)
+)
+```
+
 
 ## [`Geom.smooth`](@ref)