11.68 Text Path Smooth Plot

20220109

set.seed(142)

cities <- c("Canberra", "Darwin", "Sydney")
cols <- c("forestgreen", "deepskyblue4", "tomato4")

ds %>%
  filter(location %in% cities) %>%
  sample_n(1000) %>%
  ggplot(aes(x=temp_3pm, y=humidity_3pm)) +
  geom_point(alpha=0.05) +
  geom_textsmooth(aes(label=location, colour=location),
                  method="loess",
                  formula=y~x,
                  size=5,
                  linetype=3,
                  fontface=2,
                  linewidth=1) +
  scale_colour_manual(values = cols) +
  labs(x="Temperature 3pm", y="Humidity 3pm") +
  theme(legend.position="none")

Using geomtextpath (Cameron and van den Brand 2024) we can utilise geomtextpath::geom_textsmooth() on top of ggplot2::geom_point(). The points are faintly displayed using a small alpha=.

Notice the use of base::set.seed() so that each time this document is processed the randomly selected data is the same, so we generate the same plot each time.

References

Cameron, Allan, and Teun van den Brand. 2024. Geomtextpath: Curved Text in Ggplot2. https://allancameron.github.io/geomtextpath/.

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