In EvaMaeRey/ggstamp: Annotation in ggplot using stamp_* functions

# This is the recommended set up for flipbooks
# you might think about setting cache to TRUE as you gain practice --- building flipbooks from scratch can be time consuming
knitr::opts_chunk$set(fig.width = 6, message = F, warning = FALSE, comment = "", cache = T)

options(tibble.print_min = 55)
options(knitr.duplicate.label = "allow")
options(width=300) # prevents data wrapping

```{css, eval = TRUE, echo = FALSE} .remark-code{line-height: 1.5; font-size: 40%}

@media print { .has-continuation { display: block; } }

code.r.hljs.remark-code{ position: relative; overflow-x: hidden; }

code.r.hljs.remark-code:hover{ overflow-x:visible; width: 500px; border-style: solid; }

---


`r flipbookr::chunk_reveal("setup", left_assign = "detect")`


```r
knitr::opts_chunk$set(echo = TRUE, cache = T)

Data manipulation

r flipbookr::chunk_reveal("wrangle", left_assign = "detect")

library(tidyverse)
library(ggstamp)
bird_baths <- readr::read_csv('https://raw.githubusercontent.com/rfordatascience/tidytuesday/master/data/2021/2021-08-31/bird_baths.csv')

bird_baths %>% 
  filter(survey_year == 
           max(survey_year, na.rm = T)) %>% 
  filter(bird_count != 0 &
           !is.na(bird_count)) %>% 
  distinct(bioregions, bird_type) %>% 
  count(bioregions) ->
unique_birds_bioregions_2015

a plot where a point represents each unique bird

r flipbookr::chunk_reveal("count_plot", left_assign = "detect")

ggcanvas() +
  stamp_point(xy = pos_wrap_multi(
    n = unique_birds_bioregions_2015$n, 
    ncol = 5),
              size = 1.8) + 
  stamp_text_ljust(x = 0:9*6 -.4, text_wrap = T, char_width = 10,
                   size = 2.8, vjust = 1,
                   y = 4, 
                   label = unique_birds_bioregions_2015$bioregions,
                    ) + 
  labs(title = "Birds abound in the bird baths of Australia!") +
  labs(subtitle = "South Eastern Queensland had the greatest number of unique bird observed. The Victorian Volcanic Plain the least." %>% str_wrap(80)) + 
  labs(caption = "Data source:  Viz: @EvaMaeRey with ggplot2 and ggstamp") + 
  scale_x_continuous(expand = c(0,0)) +
  theme_void_fill(base_family = "Times", fill = "lavenderblush2")

r flipbookr::chunk_reveal("backdrop", left_assign = "detect")

unique_birds_bioregions_2015 %>% 
  filter(n == max(n) | n == min(n)) ->
bioregion_2015_min_max  

magick::image_read("mark-timberlake-arGfpweGs_M-unsplash.jpeg") %>% 
  magick::image_scale(geometry = 1000) %>% 
  magick::image_write(format = "png") %>% 
  ggbackdrop(png = .) + 
  stamp_polygon(radius = .9, size = .5,
              x0y0 = pos_wrap_multi(n = bioregion_2015_min_max$n, 
                                  ncol = 7, 
                                  spacing = 2, 
                                  width = 2.25,
                                  x0 = 63, 
                                  y0 = 32),
              fill = "midnightblue") + 
  stamp_text_ljust(label = bioregion_2015_min_max$bioregions %>% str_wrap(15),
             size = 4, x = c(62, 62 + 2 + 2.25*7), y = 37) +
  stamp_png() + 
  stamp_text(x = 48, y = 42, 
                   label = "89 unique bird types spotted at birdbaths in South Eastern Queensland" %>% 
               str_wrap(25), 
             size = 4, 
             fontface = "italic") + 
  stamp_text(x = 90, label = "41 in the Victorian Volcanic Plain" %>% str_wrap(15), y = 10, size = 4, fontface = "italic") +
  stamp_curve(y = 10, yend = 30, 
              x = 98, xend = 98, 
              curvature = .5, curveangle = 20, size = 1) + 
  stamp_text_ljust(x = 32, y = 50, 
                   label = "Bird Baths of Australia, 2015", 
                   color = "grey20") + 
  stamp_curve(x = 60, xend = 70, y = 42, yend = 40, 
              curvature = -.2, size = 1,) +
  stamp_text_ljust(y = 1, x = 50, label = 
               "Image credit: Mark Timberlake; Viz: @EvaMaeRey",
             size = 2, color = "grey20") +
  theme_void()

r flipbookr::chunk_reveal("roller", left_assign = "detect")

"noun_Bird_1648696.png" %>% 
  magick::image_read() %>% 
  magick::image_crop(geometry = "550x500+70+45") %>% 
  magick::image_scale(geometry = 400) %>% 
  magick::image_write(path = "my_bird.png", format = "png")

magick::image_read("my_bird.png")

png::readPNG("noun_Bird_1648696.png") %>% str()
png::readPNG("my_bird.png") %>% str()

# approach is jagged
ggcanvas() + 
  stamp_png(png = "my_bird.png", width = .5,
            x0y0 = pos_wrap_png(n = 5))


# prettier but ackward
ggcanvas() + 
  stamp_point(xy = pos_wrap_png(n = 5), 
              alpha = 0) +
  stamp_png2(png = "my_bird.png", width = .5,
             x0y0 = pos_wrap_png(n = 5)[1,]) +   
  stamp_png2(png = "my_bird.png", width = .5,
             x0y0 = pos_wrap_png(n = 5)[2,])  +   
  stamp_png2(png = "my_bird.png", width = .5,
             x0y0 = pos_wrap_png(n = 5)[3,])  +   
  stamp_png2(png = "my_bird.png", width = .5,
             x0y0 = pos_wrap_png(n = 5)[4,])  +   
  stamp_png2(png = "my_bird.png", width = .5,
             x0y0 = pos_wrap_png(n = 5)[5,])

r flipbookr::chunk_reveal("reduce1", left_assign = "detect")

pos_wrap_multi() ->
my_pos

# api a little awkward but works
reduce(
  1:nrow(my_pos),
  ~ .x + stamp_png2(png = "my_bird.png", width = .85,
             x0y0 = my_pos[.y,]),
  .init = ggcanvas()
) + 
  stamp_text_ljust(size = 3,
             label = "Image credit: Winn Creative",
             y = -2)

r flipbookr::chunk_reveal("reduce2", left_assign = "detect")

pos_wrap_multi(
    n = (unique_birds_bioregions_2015$n/5) %>% round(), 
    ncol = 2) ->
counting_bird_pos

# applied 
reduce(
  1:nrow(counting_bird_pos),
  ~ .x + stamp_png2(png = "my_bird.png", width = 1.1,
             x0y0 = counting_bird_pos[.y,]),
  .init = ggcanvas()
) + 
  stamp_text_ljust(x = 0:9*3 -.4, text_wrap = T, char_width = 10,
                   size = 2.8, vjust = 1,
                   y = 4, 
                   label = unique_birds_bioregions_2015$bioregions,
                    ) + 
  labs(title = "Birds abound in the bird baths of Australia!") +
  labs(subtitle = "South Eastern Queensland had the greatest number of unique bird observed. The Victorian Volcanic Plain the least." %>% str_wrap(80)) + 
  labs(caption = "Data source:  Viz: @EvaMaeRey with ggplot2 and ggstamp") + 
  scale_x_continuous(expand = c(0,0)) +
  theme_void_fill(base_family = "Times", fill = "lavenderblush2")

r flipbookr::chunk_reveal("infoprep", left_assign = "detect")

download.file("https://upload.wikimedia.org/wikipedia/commons/3/3b/Australia_states_blank.png",
              destfile = "Australia_states_blank.png")

magick::image_read("Australia_states_blank.png") %>% 
  magick::image_scale(geometry = 1000) %>% 
  magick::image_write("my_australia.png", format = "png")


png::readPNG("my_australia.png") %>% str()

ggdraft() +
  stamp_png(image = png::readPNG("my_australia.png"))


unique_birds_bioregions_2015 %>% 
  arrange(n) ->
dat

r flipbookr::chunk_reveal("info", left_assign = "detect")

ggdraft(height = 1.2) +
  stamp_point(xy = pos_polygon(n = 10, radius = .25, 
                               x0 = .5, y0 = .5), 
              size = sqrt(dat$n)*2,
              color = "slateblue") + 
  stamp_text(xy = pos_polygon(n = 10, radius = .25, 
                              x0 = .5, y0 = .5), 
             label = dat$n,
             size = sqrt(dat$n)*1.3, 
             color = "grey98"
             )  + 
  stamp_text(xy = pos_polygon(n = 10, 
                              radius = c(.39, rep(.4, 8), .42), 
                              x0 = .5, y0 = .5), 
             label = dat$bioregions %>% 
               str_wrap(8),
             size = 3, 
             color = "slateblue"
             ) + 
  stamp_text_ljust(x = 0, y = 1.15,
                   label = "Australian Bird Baths Project:",
                   size = 6, 
                   color = "slateblue"
                   ) + 
  stamp_text_ljust(x = 0, y = 1.035,
                   label = "Number of unique birds \nspotted in 2015\nby bioregion",
                   size = 4, 
                   color = "slateblue"
                   ) + 
  stamp_png2(png = "my_bird.png", 
             x0 = .5, y0 = .5,
             width = .3, color = "slateblue") +
  stamp_png2(png = "my_australia.png", 
             x0 = .79, y0 = .95,
             width = .27, color = "slateblue") +
  theme_void_fill(fill = "grey98") + 
  stamp_text_ljust(x = .6, 
             y = .01,
             label = "Image credits: Winn Creative & Creative Commons",
             size = 1.5,
             color = "slateblue")

r flipbookr::chunk_reveal("facets", left_assign = "detect")

bird_baths <- readr::read_csv('https://raw.githubusercontent.com/rfordatascience/tidytuesday/master/data/2021/2021-08-31/bird_baths.csv')

bird_baths %>% 
  filter(bird_count != 0) %>% 
  filter(!is.na(urban_rural)) %>% 
  distinct(urban_rural, survey_year, bird_type) %>% 
  count(urban_rural, survey_year) %>% 
  ggplot() + 
  aes(x = urban_rural, y = n) + 
  geom_col(fill = "steelblue") +
  facet_wrap(facets = vars(survey_year)) +
  labs(y = NULL, x = NULL) + 
  geom_text(aes(label = n), nudge_y = 5) ->
the_plot

cowplot::ggdraw(plot = the_plot) +
  stamp_grid() +
  stamp_text(x = .863, 
             label = "In 2015 in the urban setting, there are six fewer unique bird types spotted than in rural setting", 
             text_wrap = T, 
             char_width = 15, 
             y = .5, size = 5,
             color = "oldlace") + 
    stamp_label(x = .52, 
              label = "Increases are observed for both rural and urban from 2014 to 2015" %>% str_wrap(12),
              color = "grey35",
              fill = "oldlace",
             y = .5, size = 5) +
  stamp_arrow(x = .43, xend = .6, 
              y = .64, yend = .64,
              size = 4, 
              headtype = "closed", 
              color = "grey35"
              ) + 
  stamp_segment(x = .755, xend = .755, 
                y = .865, .83,
                color = "steelblue") + 
  stamp_curve(x = .76, y = .85, 
              xend = .85, yend = .67,
              size = 1,
              curvature = -.3,
              color = "darkgrey") +
  stamp_point(x = .2, y = .32,
               size = 50,
              color = "grey35"
              ) +
  stamp_text(x = .2, y = .32, text_wrap = T, char_width = 15,
             label = "Bird bath project, Australia!",
             angle = 10, color = "oldlace") + 
  stamp_png2(png = "noun_Binoculars_22637.png",
             width = .35, x0 = .38, y0 = .195,
             color =  "grey35")

r flipbookr::chunk_reveal("facets", left_assign = "detect", break_type = 1)

bird_baths <- readr::read_csv('https://raw.githubusercontent.com/rfordatascience/tidytuesday/master/data/2021/2021-08-31/bird_baths.csv')

bird_baths %>% 
  filter(bird_count != 0) %>% 
  filter(!is.na(urban_rural)) %>% 
  distinct(urban_rural, survey_year, bird_type) %>% 
  count(urban_rural, survey_year) %>% 
  ggplot() + 
  aes(x = urban_rural, y = n) + 
  geom_col(fill = "steelblue") +
  facet_wrap(facets = vars(survey_year)) +
  labs(y = NULL, x = NULL) + 
  geom_text(aes(label = n), nudge_y = 5) ->
the_plot

cowplot::ggdraw(plot = the_plot) +
  stamp_grid() +
  stamp_text(x = .863, 
             label = "In 2015 in the urban setting, there are six fewer unique bird types spotted than in rural setting", 
             text_wrap = T, 
             char_width = 15, 
             y = .5, size = 5,
             color = "oldlace") + 
    stamp_label(x = .52, 
              label = "Increases are observed for both rural and urban from 2014 to 2015" %>% str_wrap(12),
              color = "grey35",
              fill = "oldlace",
             y = .5, size = 5) +
  stamp_arrow(x = .43, xend = .6, 
              y = .64, yend = .64,
              size = 4, 
              headtype = "closed", 
              color = "grey35"
              ) + 
  stamp_segment(x = .755, xend = .755, 
                y = .865, .83,
                color = "steelblue") + 
  stamp_curve(x = .76, y = .85, 
              xend = .85, yend = .67,
              size = 1,
              curvature = -.3,
              color = "darkgrey") +
  stamp_point(x = .2, y = .32,
               size = 50,
              color = "grey35"
              ) +
  stamp_text(x = .2, y = .32, text_wrap = T, char_width = 15,
             label = "Bird bath project, Australia!",
             angle = 10, color = "oldlace") + 
  stamp_png2(png = "noun_Binoculars_22637.png",
             width = .35, x0 = .38, y0 = .195,
             color =  "grey35")