histogram of 2 columns in R

Question

i have data that looks like this:

snp=c(10139833,10139832,10139834,10139835)
code_0=c(7,7,5,4)
code_1=c(3,5,5,5)
df=data.frame(snp,code_0,code_1)

what i whish to do it to plot the distribution if code_0 and code_1 : how many times does each value in code_0 and code_1 occur: in code_0 value 7 occurs 2 times , 5 ome time anf 4 one time same for code_1 both i want in the same plot (code_0 and code_1 in different colors) i trid to do hist function or barplot but it didnt produce the correct results or just returned an error . is there any way i can make it work in R? THANK YOU

 i tried this :
hist(summerized$encoding_1
+     ,
+     col = "red",
+ )
> hist(summerized$encoding_2,
+      col = "blue",
+      add = TRUE)

which produced :

Answer 1

This might be what you are looking for.

library(tidyverse)
snp=c(10139833,10139832,10139834,10139835)
code_0=c(7,7,5,4)
code_1=c(3,5,5,5)
df=data.frame(snp,code_0,code_1)

df %>%
  pivot_longer(cols = code_0:code_1,
               names_to = "code",
               values_to = "values") %>%
  ggplot(aes(x=values))+
  geom_histogram()+
  facet_wrap(~code)
#> `stat_bin()` using `bins = 30`. Pick better value with `binwidth`.

^{Created on 2022-12-26 with reprex v2.0.2}

Edit: Here the code for plotting the histogram in one plot.

library(tidyverse)
snp=c(10139833,10139832,10139834,10139835)
code_0=c(7,7,5,4)
code_1=c(3,5,5,5)
df=data.frame(snp,code_0,code_1)

df %>%
  pivot_longer(cols = code_0:code_1,
               names_to = "code",
               values_to = "values") %>%
  ggplot(aes(x=values, fill=code))+
  geom_histogram()
#> `stat_bin()` using `bins = 30`. Pick better value with `binwidth`.

^{Created on 2022-12-26 with reprex v2.0.2}