CONTEXTE

Les données du #Tidytuesday de cette semaine proviennent de nu3.

OBJECTIFS

1. Visualiser l’influence de la consommation des différentes catégories d’aliments sur les émission de C02

IMPORTER

tuesdata <- tidytuesdayR::tt_load('2020-02-18')

food <- tuesdata$food_consumption

EXPLORER

glimpse(food)

## Observations: 1,430  
## Variables: 4  
## $ country       <chr> "Argentina", "Argentina", "Argentina", "Argentina"…  
## $ food_category <chr> "Pork", "Poultry", "Beef", "Lamb & Goat", "Fish", …  
## $ consumption   <dbl> 10.51, 38.66, 55.48, 1.56, 4.36, 11.39, 195.08, 10…  
## $ co2_emmission <dbl> 37.20, 41.53, 1712.00, 54.63, 6.96, 10.46, 277.87,…

food %>%
     count(food_category) %>% 
   knitr::kable()

food_category	n
Beef	130
Eggs	130
Fish	130
Lamb & Goat	130
Milk – inc. cheese	130
Nuts inc. Peanut Butter	130
Pork	130
Poultry	130
Rice	130
Soybeans	130
Wheat and Wheat Products	130

plt1 <-food %>%
     ggplot(aes(x=" ", y = consumption)) +
     geom_boxplot(fill = "#FFFFFF", color = "black") +
     coord_flip() +
     theme_classic() +
     xlab("") +
     ylab("consommation")+
     theme(axis.text.y=element_blank(),
          axis.ticks.y=element_blank())    

plt2 <-food %>% 
     ggplot() +
     geom_histogram(aes(x = consumption, y = (..count..)/sum(..count..)),
                         position = "identity", binwidth = 1,
                          fill = "#FFFFFF", color = "black") +
     ylab("Fréquence Relative")+
     xlab("")+    theme_classic()+
    theme(axis.text.x = element_blank())+
    theme(axis.ticks.x = element_blank())  

plt2 + plt1 + plot_layout(nrow = 2, heights = c(2, 1))

plt1 <-food %>%      
    ggplot(aes(x=" ", y = co2_emmission)) +
    geom_boxplot(fill = "#FFFFFF", color = "black") +
     coord_flip() +
    theme_classic() +
    xlab("") +
    ylab("Émissions de C02")+
    theme(axis.text.y=element_blank(),
          axis.ticks.y=element_blank())    

plt2 <-food %>%
     ggplot() +
     geom_histogram(aes(x = co2_emmission, y = (..count..)/sum(..count..)),
                         position = "identity", binwidth = 1,
                          fill = "#FFFFFF", color = "black") +
     ylab("Fréquence Relative")+
     xlab("")+
    theme_classic()+
    theme(axis.text.x = element_blank())+
    theme(axis.ticks.x = element_blank())  

plt2 + plt1 + plot_layout(nrow = 2, heights = c(2, 1))

 

PRÉPARER

data_tot<-food %>%
     group_by(country) %>%
     summarise_if(is.numeric, sum, na.rm=TRUE) %>%
     ungroup()

VISUALISER

#Graphique  
gg<-ggplot()  
#Dumbell  
gg<-gg + geom_dumbbell(data=data_tot,
                        aes(x = consumption, xend = co2_emmission, y = reorder(country,consumption),group = country),
                         colour = "white",
                       size = 2,
                       colour_x = "#922A7D",
                       colour_xend = "#0F0E0E",
                        dot_guide_size=0)  
#modifier le thème  
gg <- gg +  theme(plot.background = element_rect(fill = "#687169"),
                    panel.background = element_rect(fill = "#687169"),
                    panel.grid.major.y= element_blank(),
                    panel.grid.major.x= element_blank(),
                    panel.grid.minor = element_blank(),
                    axis.line.x = element_line(color="white"),
                    axis.line.y = element_line(color="white"),
                    axis.ticks.x = element_blank(),
                     axis.ticks.y = element_blank())  
#ajouter les titres  
gg<-gg + labs(title=
                  "Notre <span style='color:#0F0E0E'>émission de C02</span> ne dépend pas seulement de<br>ce  qu'on  mange  mais  de  <span style='color:#922A7D'>quelle  quantité</span> on  mange...<br>",
                subtitle = " ",
                x="kg/personne/année",
                 y=" ",
                 caption="\nSOURCE: nu3   |  DESIGN: Johanie Fournier, agr.")  
gg<-gg + theme(  plot.title    = element_markdown(lineheight = 1.1,size=20, hjust=1,vjust=0.5, color="white"),
                   plot.subtitle = element_blank(),
                   plot.caption  = element_text(size=8, hjust=1,vjust=0.5, family="Tw Cen MT", color="white"),
                   axis.title.y  = element_blank(),
                   axis.title.x  = element_text(size=8, hjust=0,vjust=0.5, family="Tw Cen MT", color="white"),
                   axis.text.x   = element_text(size=8, hjust=0.5,vjust=0.5, family="Tw Cen MT", color="white"),
                    axis.text.y   = element_text(size=8, hjust=1,vjust=0.5, family="Tw Cen MT", color="white"))      

Voici ce que ça donne: