[英]ggplot: How to connect points based on columns
假設我具有有關客戶和商店的地理數據,以及客戶最后一次在哪家商店購物。 我想繪制客戶和商店(根據他們的坐標),並將客戶與其各自的商店聯系起來。
這是一個玩具數據集:
library(tidyverse)
library(ggrepel)
customer.data <- data.frame(
customer = letters[1:12],
store = rep(paste0("S", 1:3), 4),
customer.lat = rnorm(12),
customer.lon = rnorm(12))
store.data <- data.frame(
customer = NA
store = paste0("S", 1:3),
store.lat = rnorm(3),
store.lon = rnorm(3)
)
data <- left_join(customer.data, store.data, by = "store") %>%
arrange(store, customer)
ggplot(data, aes(x = customer.lat, y = customer.lon, group = store)) +
geom_point(color = "blue") +
geom_point(aes(x = store.lat, y = store.lon), color = "red") +
geom_text_repel(aes(label = store))
所以我要做的是使用geom_line()或geom_segment()等將S1商店的所有客戶與其點連接起來。 我怎樣才能做到這一點?
ggplot(data, aes(x = customer.lat, y = customer.lon)) +
geom_point(aes(color = store)) +
geom_point(aes(x = store.lat, y = store.lon, color = store), size = 4) +
#geom_text_repel(aes(label = store)) +
geom_segment(aes(x = customer.lat, y = customer.lon,
xend = store.lat, yend = store.lon,
color = store))
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