Program-9

Objective

Create multiple histograms using ggplot2::facet_wrap() to visualize how a variable (e.g., sepal.length) is distributed across different groups (e.g.,Species) in a built-in R dataset.

Step-1: Load Necessary Libraries and Explore the dataset.

library(ggplot2)
#Load the irirs dataset
data(iris)
#view the first few rows of the dataset
head(iris)

  Sepal.Length Sepal.Width Petal.Length Petal.Width Species
1          5.1         3.5          1.4         0.2  setosa
2          4.9         3.0          1.4         0.2  setosa
3          4.7         3.2          1.3         0.2  setosa
4          4.6         3.1          1.5         0.2  setosa
5          5.0         3.6          1.4         0.2  setosa
6          5.4         3.9          1.7         0.4  setosa

Step-2: Create histograms using facet_wrap for grouped data

ggplot(iris, aes(x=Sepal.Length))+
  geom_histogram(binwidth = 0.3, fill="skyblue",color="black")+
  facet_wrap(~Species)+
  labs(title = "dhafkk",
       x= "sjdk",
       y="djfk")+
  theme_minimal()

Step-3: Display Histogram

ggplot(iris, aes(x=Sepal.Length))+
  geom_histogram(binwidth = 0.3,fill="skyblue" , color = "black")+
  facet_wrap(~Species)+
  labs(title = "distribution of Sepal Length by Species",
       x= "sepal length",
       y= "frequency")+
  theme_minimal()