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rggplot2textfontssize

ggplot and names: is it possible to have bold characters?

I'm trying to draw map. Is there a way to write the name of the cities in bold within the map? ( i've found only the way to choose the size ). This is my script

right_join(prov2022, dataset, by = "COD_PROV") %>% 
  ggplot(aes(fill = `real wage`))+
  geom_sf(data = ~ subset(., COD_REG == 7 | COD_REG >= 1  & COD_REG <= 3)) +
  theme_void() +
  theme(legend.title=element_blank())+
  geom_sf_text(data = ~ subset(., COD_REG == 7 ), aes(label = city_name), size = 3) +
  scale_fill_gradientn(colors = c( "#FFFFFF","#FFFF00", "#FF0000", "#000000")) +
  geom_blank()

i'd like to have the city_name in bold, but in geom_sf_text(data = ~ subset(., COD_REG == 7 ), aes(label = city_name), size = 3) i cannot find the way to do it.... (increase the size is not a good option in my case bacause i've borders that not to be crossed)

Solution

  • You can simply use fontface = "bold" in geom_sf_text

    library(ggplot2)

ggplot(df) +
  geom_sf(fill = "white") +
  geom_sf_text(aes(label = lab), size = 5, fontface = "bold")

    enter image description here

    Reproducible example

    library(sf)

df <- st_polygon(list(cbind(c(0, 1, 1, 0, 0), c(0, 0, 1, 1, 0)))) |>
  st_sfc(crs = "WGS84") |>
  st_as_sf() |>
  within(lab <- "Bold text")