Time Zones

library(tidyverse)
tuesdata <- tidytuesdayR::tt_load(2023, week = 13)

transitions<- tuesdata$transitions
timezones<- tuesdata$timezones
timezone_countries<- tuesdata$timezone_countries
countries<- tuesdata$countries

transitions%>%head

timezones%>%head

world<- map_data("world")

timezones%>%
  ggplot(aes(longitude,latitude))+
  geom_rect(xmin=0,xmax=Inf,ymin=-Inf,ymax=Inf,fill="#fff1e0")+
  geom_rect(xmin=-Inf,xmax=0,ymin=-Inf,ymax=Inf,fill="#bfd0dd")+
  geom_rect(xmin=0,xmax=Inf,ymin=-Inf,ymax=0,fill="#bfd0dd")+
  geom_rect(xmin=-Inf,xmax=0,ymin=-Inf,ymax=0,fill="#fff1e0")+
  geom_polygon(data=world,mapping=aes(long,lat,group=group),fill=NA,color="grey")+
  geom_point(shape=21,stroke=0.3,fill="#7b9aca")+
  geom_vline(xintercept = 0)+
  geom_hline(yintercept = 0)+
  coord_sf()+
  labs(title="Positive & Negative Coordinates",
       subtitle = "Time zone locations",
       caption="DataSource: #TidyTuesday Week13: Time Zones - #30DayChartChallenge Day15: positive/negative\nDataViz: Federica Gazzelloni")+
  ggthemes::theme_map()+
  theme(plot.background = element_rect(color="#7b9aca",fill="#7b9aca"))

Bonne Projection

library(sf)
projection_bonne <- c("+proj=bonne +lat_1=10")

world_graticule <- sf::st_graticule(lon= seq(-180,180, 15),
                                    lat = seq(-90,90, 7.5),
                                    ndiscr = 5000,
                                    margin = 0.00000000001) %>%
  sf::st_transform(projection_bonne)


world_pol <- rnaturalearth::ne_countries(returnclass = "sf")

DT_sf = st_as_sf(timezones, coords = c("longitude", "latitude"), 
                 crs = 4326, agr = "constant")

ggplot()+
  geom_sf(data = world_graticule)+
  geom_sf(data = world_pol)+
  geom_sf(data=DT_sf)+
  coord_sf()

# input_coord <- st_point(c(<longitude>, <latitude>))
proj_mollweide <- "+proj=moll"
output_coord <- st_transform(DT_sf, crs = proj_mollweide)

Mollweide Projection

# set the fonts
library(showtext)
library(sysfonts)
library(extrafont)
showtext::showtext_auto()
showtext::showtext_opts(dpi=320)
font_add_google(name="Patrick Hand",
                family="Patrick Hand")

ggplot(output_coord)+
  geom_rect(xmin=0,xmax=Inf,ymin=-Inf,ymax=Inf,fill="#fff1e0")+
  geom_rect(xmin=-Inf,xmax=0,ymin=-Inf,ymax=Inf,fill="#bfd0dd")+
  geom_rect(xmin=0,xmax=Inf,ymin=-Inf,ymax=0,fill="#bfd0dd")+
  geom_rect(xmin=-Inf,xmax=0,ymin=-Inf,ymax=0,fill="#fff1e0")+
  geom_sf(data = world_pol,fill=NA,color="grey40")+
  geom_sf(shape=21,stroke=0.3,fill="#7b9aca")+
  geom_vline(xintercept = 0)+
  geom_hline(yintercept = 0)+
  #coord_map(projection = "mollweide")+
  labs(title="Positive & Negative Coordinates",
       subtitle = "Time zone locations",
       caption="DataSource: #TidyTuesday Week13: Time Zones - #30DayChartChallenge Day15: positive/negative\nDataViz: Federica Gazzelloni")+
  ggthemes::theme_map()+
  theme(text=element_text(family="Patrick Hand"),
        plot.title = element_text(size=30),
        plot.caption = element_text(size=10),
        plot.background = element_rect(color="#7b9aca",fill="#7b9aca"))

ggsave("p.png",
       width = 7,height = 5)