Добавить горизонтальную линию в полосу Лайкерта ggplot

Чтобы определить положение линий и текста, сохраните исходный график как p, затем используйте layer_data(p, 3) для проверки данных (в частности, столбцов x, y и label) за третьим слоем ggplot (тот, который содержит текстовые проценты).

Затем добавьте geom_hline и annotate в определенные позиции.

library(dplyr, warn = FALSE)
library(ggplot2)
library(ggstats)
library(purrr)

likert_levels <- c(
  "Strongly disagree",
  "Disagree",
  "Neither agree nor disagree",
  "Agree",
  "Strongly agree"
)

df <-
  tibble(
    "there is an argument sort_prop_include_center that could be set up to TRUE in order to include half of the centered level when sorting data" = sample(likert_levels, 150, replace = TRUE),
    "Similarly, the argument totals_include_center allows you to include half of the centered level into the left and the right totals" = sample(likert_levels, 150, replace = TRUE, prob = 5:1),
    "Here is one possible option which uses reorder and an ifelse to reorder the variable mapped on y using the counts (aka the sum) of Strictly disagree " = sample(likert_levels, 150, replace = TRUE, prob = 1:5),
    "and disagree answers. Under the hood ggstats::gglikert reshape the data to long where the question id's are stored in a column named .question and the answers in a column named .answer:" = sample(likert_levels, 150, replace = TRUE, prob = 1:5),
    "They used sampling data and create a data frame called df. I am using the same as given in the link.(the df not the df_dk). Ok, if i run in R the following code :" = sample(c(likert_levels, NA), 150, replace = TRUE),
    "proportion of answers higher than the centered level. I want the plot to be sorted according to very left proportions that are the combination (sum) of the two lower levels. (i.e Respectively the percentages on the very right in the sum of the two lower categories. )" = sample(likert_levels, 150, replace = TRUE, prob = c(1, 0, 1, 1, 0))
  ) %>%
  mutate(across(everything(), ~ factor(.x, levels = likert_levels)))

# function to save retyping common arguments
anno <- partial(annotate, "text", x = -1, angle = 90, size = 5, fontface = "bold")

gglikert(df) +
  aes(y = reorder(.question,
                  ifelse(
                    .answer %in% c("Strongly disagree", "Disagree"),
                    1, 0
                  ),
                  FUN = sum, decreasing = TRUE
  )) +
  theme(axis.text.y = element_text(size = 8)) + 
  geom_hline(yintercept = c(1.5, 5.5), linetype = "dashed", colour = "grey20") +
  anno(y = 1, label = "warning\nzone", color = "#A6611A") +
  anno(y = 3.5, label = "so-so", color = "black") +
  anno(y = 6, label = "no warning\nzone", color = "#018571") +
  labs(y = NULL)

^{Created on 2024-04-21 with reprex v2.1.0}