Draw Plot with Regression Line in Certain Limits in R (Example Code)

In this post you’ll learn how to draw a regression line to a graph between a particular range in R.

Creation of Example Data

data(iris)                        # Example data
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

Example: Draw Fitted Line with Certain Limits in Base R Graphic

plot(x = iris$Petal.Width,        # Add fitted line with limits
     y = iris$Sepal.Length)
clip(x1 = 1,
     x2 = 2, 
     y1 = - 10,
     y2 = 10)
abline(lm(Sepal.Length ~ Petal.Width, iris))

r graph figure 1 draw regression line certain limits r

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