ggplot geom_bar where x = multiple columns

Question

How can I go about making a bar plot where the X comes from multiple values of a data frame?

Fake data:

data <- data.frame(col1 = rep(c(\"A\", \"         


        

Answer 1

If you actually group your Y's and N's by the other three columns, there will be one observation in each group. However, if you had repeated Y's and N's you could recode them to 1's and 0's, and get the percentage. Here's an example:

 library(tidyverse)

 data <- data.frame(col1 = rep(c("A", "B", "C", "B", "C", "A", "A", "B", "B", "A", "C")), 
               col2 = rep(c(2012, 2012, 2012, 2013, 2013, 2014, 2014, 2014, 2015, 2015, 2015)), 
               col3 = rep(c("Up", "Down", "Up", "Up", "Down", "Left", "Right", "Up", "Right", "Down", "Up")), 
               col4 = rep(c("Y", "N", "N", "N", "Y", "N", "Y", "Y", "Y", "N", "Y")))


 data %>%
    dplyr::group_by(col1,col2,col3) %>%
    mutate(col4 = ifelse(col4 == "Y", 1,0)) %>%
    dplyr::summarise(percentage = mean(col4)) %>%
    ggplot(aes(x = col1, y = percentage, color = as.factor(col2), fill = col3)) +
    geom_col(position = position_dodge(width = .5))