設置子圖顏色繪圖 R

Question

我有這個子圖的代碼，我想通過自定義調色板設置顏色，但似乎不采用任何顏色。

data.frame(x = sample(letters[1:3],30,replace = TRUE)) %>%
  mutate(y = rnorm(30),
         z = runif(30,10,20)) %>%
  group_by(x) %>%
  do(p=plot_ly(.,x = ~y, y=~z, type = "scatter", mode = "lines", line = list(color = "blue","red","green")))) %>%
  subplot(nrows = 1,
                  shareX = FALSE,
                  shareY = TRUE,
                  margin = 0.0001)

Answer 1

實現您想要的結果的一種選擇是將分組變量映射到color “美學”並通過colors參數設置自定義調色板，我個人更喜歡使用命名向量為類別分配顏色：

library(plotly)

set.seed(123)

data.frame(x = sample(letters[1:3], 30, replace = TRUE)) %>%
  mutate(
    y = rnorm(30),
    z = runif(30, 10, 20)
  ) %>%
  group_by(x) %>%
  do(p = plot_ly(., x = ~y, y = ~z, color = ~x, type = "scatter", mode = "lines", colors = c(a = "blue", b = "red", c = "green"))) %>%
  subplot(
    nrows = 1,
    shareX = FALSE,
    shareY = TRUE,
    margin = 0.0001
  )