Making a geom_bar from a dataframe in R-CodePudding

Background

I have a dataframe, df, of athlete injuries:

df <- data.frame(number_of_injuries = c(1,2,3,4,5,6),
                 number_of_people = c(73,52,43,12,7,2),
                 stringsAsFactors=FALSE)

The Problem

I'd like to use ggplot2 to make a bar chart or histogram of this simple data using geom_bar or geom_histogram. Important point: I'm pretty novice with ggplot2.

I'd like something where the x-axis shows bins of the number of injuries (number_of_injuries), and the y-axis shows the counts in number_of_people. Like this (from Excel):

What I've tried

I know this is the most trivial dang ggplot issue, but I keep getting errors or weird results, like so:

ggplot(df, aes(number_of_injuries))  
  geom_bar(stat = "count")

Which yields:

I've been in the tidyverse reference website for an hour at this and I can't crack the code.

CodePudding user response：

It can cause confusion from time to time. If you already have "count" statistics, then do not count data using geom_bar(stats = "count") again, otherwise you simply get 1 in all categories. You want to plot those values as they are with geom_col:

ggplot(df, aes(x = number_of_injuries, y = number_of_people))   geom_col()