Adding Features to a Data Frame

We will look at the code to add new columns to an R data frame. A new column may be a new feature or a copy of an existing column. We'll look at an example in the following exercise. Adding new features can help in improving the efficiency of a model.

Exercise 29: Adding a New Column to an R Data Frame

In this exercise, we will add columns to an existing R data frame. These new columns can be dummy values or copies of other columns.

1. Add a new feature to the R data frame, as follows:

   #Adding new features to a R datadrame

   library(caret)

2. Load the GermanCredit dataset:

   data(GermanCredit)

3. Assign the GermanCredit value to a new field:

   #Assign the value to the new field

   GermanCredit$NewField1 <- 1

4. Print the GermanCredit string:

   str(GermanCredit)

   The output is as follows:

   

   Figure 3.10: Section showing the added NewField

5. Copy an existing column into a new column, as follows:

   #Copy an existing column into a new column

   GermanCredit$NewField2 <- GermanCredit...