making histogram in r

[help]

my data:

structure(list(years = c(1.111, 3.22444, 3.444, 3.33, 1.33923, 
12.33), counts = c(4, 3, 21, 32, 22, 21)), row.names = c(NA, 
-6L), class = c("tbl_df", "tbl", "data.frame"))

hello I am trying to make a histogram where years is on the X axis and Y is the number of counts for those years. I am trying to do this with the following code:

ggplot(data = BOOKIII_121, aes(x = years, y = animal_numbers)) + geom_bar(stat = "identity")

I am so confused how to make this histogram without geom_histogram. I really dont know why the graph is not showing up. It just shows an empty graph that does not look like anything. any advice is helpful thank U:(<3

[andresrcs]

@help

y = animal_numbers)

There is no variable called animal_numbers in your sample data, if you replace this with counts you get a plot

library(ggplot2)

BOOKIII_121 <- structure(list(years = c(1.111, 3.22444, 3.444, 3.33, 1.33923, 
12.33), counts = c(4, 3, 21, 32, 22, 21)), row.names = c(NA, 
-6L), class = c("tbl_df", "tbl", "data.frame"))

ggplot(data = BOOKIII_121, aes(x = as.factor(years), y = counts)) +
    geom_col()

^{Created on 2022-09-30 with reprex v2.0.2}

[help]

@help

ggplot(data = BOOKIII_121, aes(x = years, y = animal_numbers)) + geom_bar(stat = "identity")

I am so dumb I made a mistake in typing my code out but it still doesnt work. but also the thing is I don't want the x axis as a factor I want it as a histogram like a continuous variable. thank u D:. when I change it to a factor as you did in the ggplot it works.

[andresrcs]

@help

I made a mistake in typing my code out but it still doesnt work.

Can you be more specific?, what do you mean by "it doesn't work"?, ideally, could you please prepare a reproducible example (reprex) illustrating your issue? Please have a look at this guide, to see how to create one:

FAQ: How to do a minimal reproducible example ( reprex ) for beginners

A minimal reproducible example consists of the following items: A minimal dataset, necessary to reproduce the issue The minimal runnable code necessary to reproduce the issue, which can be run on the given dataset, and including the necessary information on the used packages. Let's quickly go over each one of these with examples: Minimal Dataset (Sample Data) You need to provide a data frame that is small enough to be (reasonably) pasted on a post, but big enough to reproduce your issue. Let's say, as an example, that you are working with the iris data frame head(iris) #> Sepal.Length Sepal.Width Petal.Length Petal.Width Species #> 1 5.1 3.5 1.4 0.…

[help]

yes sorry. if I dont add "y = as.factor(years)" and keep it as "y=years" the plot doesnt show... which is unfortunate because I want a histogram

[andresrcs]

Well, in your iriginal code you are using geom_bar() with a continuous variable, this is not the expected use case for a barplot, so you get an odd result. If you want to make a proper histogram by using geom_bar() you would need to pre-calculate bins (categories) as well. I think it would be simpler to uncount() your data and use geom_histogram() to calculate the bins for you.

library(tidyverse)

BOOKIII_121 <- structure(list(years = c(1.111, 3.22444, 3.444, 3.33, 1.33923, 
12.33), counts = c(4, 3, 21, 32, 22, 21)), row.names = c(NA, 
-6L), class = c("tbl_df", "tbl", "data.frame"))

ggplot(data = BOOKIII_121, aes(x = years, y = counts)) +
    geom_col()

BOOKIII_121 %>% 
    uncount(weights = counts) %>% 
    ggplot(aes(x = years)) + 
    geom_histogram(binwidth = 1)

^{Created on 2022-09-30 with reprex v2.0.2}

[help]

this makes so much sense. I had no idea you could do this wow, thank you.