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Visualizing the dataset

In this exercise you will use ggplot() to visualise the complex dataset you created in the previous exercises. The dataset is available in the dataframe df. You are not required to visualize the decision boundary.

Here you will use coord_fixed() to give the x and y axes the same physical representation on the plot, making the circles appear as circles rather than ellipses.

Questo esercizio fa parte del corso

Support Vector Machines in R

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Istruzioni dell'esercizio

  • Load the required plot library.
  • Set the arguments of the aesthetics parameter.
  • Set the appropriate geom_ function for a scatter plot.
  • Specify equal coordinates by adding coord_fixed() without arguments.

Esercizio pratico interattivo

Prova a risolvere questo esercizio completando il codice di esempio.

# Load ggplot2
library(___)

# Plot x2 vs. x1, colored by y
scatter_plot<- ggplot(data = df, aes(x = ___, y = ___, color = ___)) + 
    # Add a point layer
    geom___() + 
    scale_color_manual(values = c("red", "blue")) +
    # Specify equal coordinates
    coord_fixed()
 
scatter_plot
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