R 和 ggplot2 : how do I connect the dots for a line chart and polar coordinates?

Question

正如我的同事指出的那样，点点滴滴是他们在小学教的东西。

这是数据:

hour_timetable  mean_delayed_pass
0   6.074
1   6.512
2   7.632
3   9.393
4   8.759
5   4.600
6   6.040
7   5.575
8   5.680
9   6.315
10  6.895
11  7.852
12  6.832
13  6.961
14  6.322
15  5.954
16  5.579
17  5.540
18  5.142
19  5.579
20  6.139
21  6.501
22  6.140
23  6.061

这是代码:

library(ggplot2)
ggplot(data = test_vis, aes(x = factor(hour_timetable), y = mean_delayed_pass, group = 1)) + 
   ylim(0, NA) + 
   geom_point(color = 'purple', stat = 'identity') + 
   geom_line(color = 'purple') + 
   coord_polar(start = -0.12) # why offset?

Answer 1

使用 geom_polygon()而不是 geom_line() .您可以使用 geom_polygon(..., fill=NA) 为多边形设置空填充。 .

尝试这个:

library(ggplot2)
ggplot(data = test_vis, aes(x = factor(hour_timetable), y = mean_delayed_pass, group = 1)) + 
  ylim(0, NA) + 
  geom_point(color = 'purple', stat = 'identity') + 
  geom_polygon(color = 'purple', fill=NA) + 
  coord_polar(start = - pi * 1/24)

要将零点放在图的顶部，请使用 offset = - pi / 24 .