births_in_brazil

#Time-series
#Theme: Births in Brazil
#Author: Denis de Oliveira Rodrigues

library(tidyverse)
library(datasus)
library(gganimate)

per <- seq(2016,1995,-1)

nv_brasil <- sinasc_nv_mun(linha = "Sexo", coluna = "Ano do nascimento", periodo = per)

nv_brasil_long <- nv_brasil %>% 
  filter(Sexo != c("TOTAL","Ign")) %>% 
  pivot_longer(cols = -Sexo,
               names_to = "Ano",
               values_to = "Nv") %>% 
  filter(Ano %in% per) %>% 
  mutate(Ano = as.integer(Ano))

nv_brasil_long %>% 
ggplot(aes(Ano, Nv, group = Sexo, color = Sexo)) +
  geom_line(show.legend = FALSE) +
  geom_segment(aes(xend = 2016, yend = Nv), linetype = 2, colour = "grey", show.legend = FALSE) +
  geom_point(size = 2, show.legend = FALSE) + 
  geom_text(aes(x = 2016, label = Sexo), hjust = 0, show.legend = FALSE) + 
  transition_reveal(Ano) + 
  coord_cartesian(clip = 'off') + 
  labs(title = 'Births in Brazil, 1995-2016', y = 'Número total de nascimentos') +
  scale_x_continuous("Ano de nascimento", labels = nv_brasil_long$Ano, breaks = nv_brasil_long$Ano)+
  theme(axis.text.x = element_text(face = "plain", size = 8))