在 ggplot2 中自定义 Social Network Visual 中的线条颜色

Question

我正在努力解决以下问题。我想象了一个大型社交网络，并想自定义 geom_segment 中捕获的边缘的调色板以获得更好的可见性。例如，我想用红色刻度代替我的蓝色刻度。我怎样才能以最简单的方式实现它？

我有以下运行良好的代码：

ggplot(nodes_geo) + country_shapes +
  geom_segment(aes(x = x, y = y, xend = xend, yend = yend, alpha = weight, color = weight     # draw edges as arcs
                  ),
               data = edges_for_plot, curvature = 0.33,
               ) +
  scale_size_continuous(guide = FALSE, range = c(0.25, 2)) + # scale for edge widths
  geom_point(aes(x = longitude, y = latitude, size = weight),           # draw nodes
             shape = 21, fill = 'white',
             color = 'black', stroke = 0.5) +
  scale_size_continuous(guide = FALSE, range = c(0.01, 2)) + # scale for node size
  mapcoords + maptheme

非常感谢！

Answer 1

感谢 stefan，我使用以下代码使用 scale_color_gradient 将颜色从蓝色更改为红色。

 ggplot(nodes_geo) + country_shapes +
  geom_curve(aes(x = x, y = y, xend = xend, yend = yend, alpha = weight, color = weight     # draw edges as arcs),
  data = edges_for_plot, curvature = 0.33,) +
  scale_color_gradient(low = "red4", high = "red")+ # <-- Customize color
  scale_size_continuous(guide = FALSE, range = c(0.25, 2)) + # scale for edge widths
  geom_point(aes(x = longitude, y = latitude, size = weight),           # draw nodes
             shape = 21, fill = 'white',
             color = 'black', stroke = 0.5) +
  scale_size_continuous(guide = FALSE, range = c(0.01, 2)) + # scale for node size
  mapcoords + maptheme

在 ggplot2 中自定义 Social Network Visual 中的线条颜色

Customize color of lines in Social Network Visual in ggplot2

r

ggplot2

sna