I have this table and I would like to plot the start and end coordinate of petals and leaves (one color for petls and another for leaves).

I don't want represent it with a dot but with a line starting from the start coordinate and ending at the end coordinate for petals and leaves represented with different color.

Is there any way?

CodePudding user response：

I guess you could have something like this:

library(ggplot2)

ggplot(df, aes(y = string, x = start, colour = string))  
  geom_segment(aes(yend = string, xend = end), size = 3)  
  scale_color_manual(values = c("yellowgreen", "violet"))  
  theme_bw()  
  coord_fixed(20)  
  labs(x = "Position")

If you want the lines at the same height you could do:

ggplot(df, aes(y = 1, x = start, colour = string))  
  geom_segment(aes(yend = 1, xend = end), size = 3)  
  scale_color_manual(values = c("yellowgreen", "violet"))  
  theme_bw()  
  coord_fixed(500)  
  labs(x = "Position")  
  theme(axis.title.y = element_blank(),
        axis.ticks.length.y = unit(0, "mm"),
        axis.text.y = element_blank())

Data

df <- structure(list(string = c("petals", "leaves", "petals", "leaves", 
"petals", "leaves"), id = c("id", "id", "id", "id", "id", "id"
), start = c(50L, 101L, 152L, 203L, 254L, 306L), end = c(100L, 
151L, 202L, 253L, 305L, 356L)), class = "data.frame", row.names = c(NA, 
-6L))