TidyTuesday 2022W01 – Bring Your Own Data

This week #Tidytuesday is the traditional “Bring Your Own Data” annual event!

To celebrate this very unique new year, I choose to bring to my blog a little dashboard that I’ve created. I use this dataviz to summarize all the available information about a farmer’s field. This viz is all about positioning a specific among other fields without giving any information on the data distribution. It’s usually very appreciated. What do you think? Would you change something about it?


# Data


# Parallel Processing

# Core 

#My functions


I present here the case of field 1 of John Doe’s farm. Those little
dashboard are useful to make portraits of corn fields.

data_bilan_valeur <- data.frame(ferme_champ=c("John Doe Farm - Field 1","John Doe Farm - Field 1","John Doe Farm - Field 1","John Doe Farm - Field 1"),
                                type=c("N_tissus_mg_kg", "rdt_tha", "Apport_N", "ratio_c_labile_pct"),
                                valeur=c(167, 11.5, 210, 1.6))

data_bilan_valeur %>% 
  kable() %>% 
  kable_styling(bootstrap_options = c("condensed"), full_width = T, position = "left")
ferme_champ type valeur
John Doe Farm – Field 1 N_tissus_mg_kg 167.0
John Doe Farm – Field 1 rdt_tha 11.5
John Doe Farm – Field 1 Apport_N 210.0
John Doe Farm – Field 1 ratio_c_labile_pct 1.6

This graph aims to help John Doe compare the parameters of his corn field to the parameters of all the corn field. To do that, I use parameters of all corn field to create regressions. The results of those regression, help positionning points on the graph.

coefficient<-data.frame(parametre=c("rendement", "azote", "nitrates", "labile"),
                                 a=c(11.6, 0.165, 0.0174, 25.4),
                                 b=c(-60, 11.3, 26, -4.07))

coefficient %>% 
  kable() %>% 
  kable_styling(bootstrap_options = c("condensed"), full_width = T, position = "left")
parametre a b
rendement 11.6000 -60.00
azote 0.1650 11.30
nitrates 0.0174 26.00
labile 25.4000 -4.07
data_bilan_graph<-data_bilan_valeur %>% 
  pivot_wider(names_from ="type", values_from="valeur") %>% 
         c_labile_pct=coefficient$a[4]*ratio_c_labile_pct+coefficient$b[4]) %>% 
  select(ferme_champ, N_tissus_pct, rdt_pct, apport_n_pct, c_labile_pct) %>% 
  pivot_longer(-ferme_champ, names_to = "type", values_to = "valeur")

data_bilan_graph %>% 
  kable() %>% 
  kable_styling(bootstrap_options = c("condensed"), full_width = T, position = "left")
ferme_champ type valeur
John Doe Farm – Field 1 N_tissus_pct 28.9058
John Doe Farm – Field 1 rdt_pct 73.4000
John Doe Farm – Field 1 apport_n_pct 45.9500
John Doe Farm – Field 1 c_labile_pct 36.5700


data_bilan_graph$type <- factor(data_bilan_graph$type,levels = c("N_tissus_pct", "rdt_pct", "apport_n_pct", "c_labile_pct"))

data_bilan_valeur$type <- factor(data_bilan_valeur$type,levels = c("N_tissus_mg_kg", "rdt_tha", "Apport_N", "ratio_c_labile_pct"))

gg<-ggplot(data_bilan_graph, aes(x=valeur, y=factor(type))) +
  geom_segment(aes(x=0, xend=100,y=type, yend=type), color="#A9A9A9", alpha=0.6, size=3) +    
  geom_vline(xintercept =c(25,75),linetype=2,size=2, color="#0A369D" ) + 
  annotate("rect", xmin=38.58, xmax=39.78, ymin=0.8, ymax=1.2,fill="#101010", alpha=0.6) +
  geom_text(aes(x=38.18, y=1.3, label="700 mg/kg"), color="#101010", size=3.5, vjust=0.5, hjust=0.5) + 
  annotate("rect", xmin=59.2, xmax=60.4, ymin=0.8, ymax=1.2,fill="#101010", alpha=0.6) +
  geom_text(aes(x=60.8, y=1.3, label="2000 mg/kg"), color="#101010", size=3.5, vjust=0.5, hjust=0.5) +
  geom_text(aes(x=20, y=4.5, label="25% inferior"), color="#0A369D", size=4, vjust=0.5, hjust=1, fontface="bold") + 
  geom_text(aes(x=78, y=4.5, label="25% superior"), color="#0A369D", size=4, vjust=0.5, hjust=0, fontface="bold") + 
  geom_point(data=data_bilan_graph, aes(x=valeur, y=factor(type)),color="#F27900", fill="#F1B745", shape=21, size=20) +
  geom_text(aes(x=valeur, y=type, label=(round(data_bilan_valeur$valeur,digits=1))), color="#3E3E3E", size=5.5, vjust=0.5, hjust=0.5, fontface="bold") + 
  scale_x_discrete(breaks=seq(1,4,1), limits=c(0,4.5))+
  scale_y_discrete(label= c( "Nitratenmg/kg", "Yieldnkg/ha","N Brut Supplynkg/ha", "Labil Carbonn%")) +
  theme(axis.line.x      = element_blank(),
        axis.line.y      = element_blank(),
        axis.ticks       = element_blank(),
        strip.background = element_rect(colour="#3F3E46", fill=NA),
        plot.title       = element_text(size=20, hjust=0.5,vjust=0.5,face="bold", color="#201F23" ),
        plot.subtitle = element_blank(),
        plot.caption  = element_blank(),
        axis.title.y  = element_blank(),
        axis.title.x  = element_blank(),
        axis.text.y   = element_text(size=16, hjust=1,vjust=0.5, color="#3F3E46"),
        axis.text.x   = element_blank()) + 
  labs(title="John Doe Farm - Field 1",
                x=" ",
                y=" ")


Now we can clearly see that John Doe’s Fiel 1 has yielded nearly as good as the top 25% event thought the nitrogen supply was on the average and the nitrate in the rod was close to the 25% inferior group.


FALSE [1] "2022-01-09 13:54:40 EST"


FALSE Local:    master /Users/johaniefournier/Library/Mobile Documents/com~apple~CloudDocs/TidyTuesday
FALSE Remote:   master @ origin (https://github.com/Jofou/TidyTuesday.git)
FALSE Head:     [80b63ea] 2022-01-09: correct table


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