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Problem creation multiples ggplot with a list of dataframes, stored in a list of plot

May 3, 2022

I have this list of dataframes

i want to generate the same plot for each of dataframe. (the columns of interest share the same name, that are : " COType ; Zscore ; SpatialLag ".
Here’s my code plotting a single dataframe (Community) :

ggplot(List_df_EU[["COMMUNITY"]], aes(x = Zscore, 
                       y = SpatialLag,
                       fill = COType)) + 
  geom_point(color = "white", shape = 21, size = 2) + 
  theme_minimal() + 
  geom_hline(yintercept = 0, linetype = "dashed", size = 0.7) + 
  geom_vline(xintercept = 0, linetype = "dashed", size = 0.7) + 
  scale_fill_manual(values = color_values) + 
  labs(title = names(List_df_EU[1]),
       subtitle = "Graph de Moran sur les scores ESG des entreprises EU",
       x = "z-score",
       y = "Spatial lag",
       fill = "Type de voisinage")+
  theme_fivethirtyeight()+
  theme (axis.title = element_text(), text = element_text(family = myFont1))

Here’s the code supposed to create a single plot for each dataframe. it doesn’t fill the list and doesn’t send error message back

plotlist <- vector()

plotlist <- for(i in 1:length(List_df_EU)) {                              
 ggplot(List_df_EU[[i]], aes(x = Zscore, 
                                      y = SpatialLag,
                                      fill = COType)) + 
  geom_point(color = "white", shape = 21, size = 2) + 
  theme_minimal() + 
  geom_hline(yintercept = 0, linetype = "dashed", size = 0.7) + 
  geom_vline(xintercept = 0, linetype = "dashed", size = 0.7) + 
  scale_fill_manual(values = color_values) + 
  labs(title = names(List_df_EU[[i]]),
       subtitle = "Graph de Moran sur les scores ESG des entreprises EU",
       x = "z-score",
       y = "Spatial lag",
       fill = "Type de voisinage")+
  theme_fivethirtyeight()+
  theme (axis.title = element_text(), text = element_text(family = myFont1))
}

If you have any tips it would be awesome!(Would be deseperate move generating plots manually)

>Solution :

To run the same ggplot code over a list of dataframes, I think lapply is better than a for loop. Try this:

plotlist <- lapply(List_df_EU, function(x) {
  ggplot(x, aes(x = Zscore, 
                y = SpatialLag,
                fill = COType)) + 
    geom_point(color = "white", shape = 21, size = 2) + 
    theme_minimal() + 
    geom_hline(yintercept = 0, linetype = "dashed", size = 0.7) + 
    geom_vline(xintercept = 0, linetype = "dashed", size = 0.7) + 
    scale_fill_manual(values = color_values) + 
    labs(title = names(x),
         subtitle = "Graph de Moran sur les scores ESG des entreprises EU",
         x = "z-score",
         y = "Spatial lag",
         fill = "Type de voisinage")+
    theme_fivethirtyeight()+
    theme (axis.title = element_text(), text = element_text(family = myFont1))
}