flow chart

R code of the ggplot2 example

library(ggplot2)
library(dplyr)

## How this lexicon's R/06_add_term.R adds a term: boxes for steps, diamonds
## for decisions, each decision answered by yes or no.
w <- 1.9   # half-width of a diamond
h <- 0.42  # half-height of a diamond
steps <- tribble(
  ~id, ~shape, ~x, ~y, ~label,
  "start", "box", 0, 5.5, "English term given",
  "id", "diamond", 0, 4.4, "Identifier valid and new?",
  "variant", "diamond", 0, 3.3, "Covered by an existing variant?",
  "registry", "diamond", 0, 2.2, "Category and sources known?",
  "complete", "diamond", 0, 1.1, "French term, category, definition?",
  "ok", "box", -1.5, 0, "Entry \"ok\"",
  "draft", "box", 1.5, 0, "Entry \"draft\"",
  "stop1", "stop", 3.1, 4.4, "Stop",
  "stop2", "stop", 3.1, 3.3, "Stop",
  "stop3", "stop", 3.1, 2.2, "Stop"
)
diamonds <- steps |>
  filter(shape == "diamond") |>
  rowwise() |>
  reframe(id = id, x = x + c(0, w, 0, -w), y = y + c(h, 0, -h, 0))
boxes <- filter(steps, shape != "diamond")
arrows <- tribble(
  ~x, ~y, ~xend, ~yend, ~answer,
  0, 5.3, 0, 4.4 + h, "",
  0, 4.4 - h, 0, 3.3 + h, "yes",
  w, 4.4, 2.7, 4.4, "no",
  0, 3.3 - h, 0, 2.2 + h, "no",
  w, 3.3, 2.7, 3.3, "yes",
  0, 2.2 - h, 0, 1.1 + h, "yes",
  w, 2.2, 2.7, 2.2, "no",
  -w, 1.1, -1.5, 0.2, "yes",
  w, 1.1, 1.5, 0.2, "no"
)

p <- ggplot() +
  geom_segment(data = arrows, aes(x = x, y = y, xend = xend, yend = yend), colour = "#535353",
               linewidth = 0.4, arrow = grid::arrow(length = unit(1.4, "mm"), type = "closed")) +
  geom_text(data = filter(arrows, answer != ""),
            aes(x = (x + xend) / 2 + ifelse(y == yend, 0, 0.1), y = (y + yend) / 2 + ifelse(y == yend, 0.14, 0),
                label = answer, hjust = ifelse(y == yend, 0.5, 0)), size = 2.3, colour = "#7d7d7d") +
  geom_polygon(data = diamonds, aes(x = x, y = y, group = id), fill = "#f3e3ec", colour = "#9b2367", linewidth = 0.4) +
  geom_tile(data = boxes, aes(x = x, y = y, width = ifelse(shape == "stop", 0.8, 1.9), height = 0.4,
                              fill = shape), colour = NA) +
  geom_text(data = steps, aes(x = x, y = y, label = label,
                              colour = ifelse(shape == "diamond", "dark", "light")), size = 2.3) +
  scale_fill_manual(values = c(box = "#9b2367", stop = "#535353"), guide = "none") +
  scale_colour_manual(values = c(dark = "#262626", light = "white"), guide = "none") +
  scale_x_continuous(limits = c(-2.6, 3.6)) +
  labs(title = "A new term is checked, then saved as ok or draft",
       subtitle = "How a term is added to this lexicon, simplified",
       x = NULL, y = NULL,
       caption = "Data: the code of R/06_add_term.R in this lexicon") +
  theme_lex_viz(grid = "", arrows = "") +
  theme(axis.text = element_blank())