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Labeling Vectors | Basic Data Types and Vectors
R Introduction: Part I

Labeling Vectors

Now that you're familiar with creating vectors, let's apply them to store and label valuable information, such as grades on a scale from 1 to 100. However, the grades alone may not be self-explanatory to someone else.

Suppose the grades are as follows:

Subject Grade
Math 80
Physics 75
English 95
Literature 100

While you know how to create a vector with grades, the next step is labeling those values with their corresponding subjects. This can be done by assigning a vector of names to names(vector), where vector is your original vector that you wish to label.

Here's how you can do that:

Here, c('Math', 'Physics', 'English', 'Literature') is the vector of names (labels). As you can see, using this approach, we can present the information more clearly.

Tarefa

Imagine you manage a local furniture store. You have a list of items and their respective prices, as shown below:

ItemPrice
Sofa$340
Armchair$150
Dining table$115
Dining chair$45
Bookshelf$160

Your task is to store the prices in a vector named prices and label each price with the corresponding item.

  1. Construct a vector of prices and store it in the variable prices.
  2. Use the variable items to assign names to the elements in the prices vector.
  3. Display the prices vector.

Tudo estava claro?

Seção 2. Capítulo 6
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Conteúdo do Curso

R Introduction: Part I

Labeling Vectors

Now that you're familiar with creating vectors, let's apply them to store and label valuable information, such as grades on a scale from 1 to 100. However, the grades alone may not be self-explanatory to someone else.

Suppose the grades are as follows:

Subject Grade
Math 80
Physics 75
English 95
Literature 100

While you know how to create a vector with grades, the next step is labeling those values with their corresponding subjects. This can be done by assigning a vector of names to names(vector), where vector is your original vector that you wish to label.

Here's how you can do that:

Here, c('Math', 'Physics', 'English', 'Literature') is the vector of names (labels). As you can see, using this approach, we can present the information more clearly.

Tarefa

Imagine you manage a local furniture store. You have a list of items and their respective prices, as shown below:

ItemPrice
Sofa$340
Armchair$150
Dining table$115
Dining chair$45
Bookshelf$160

Your task is to store the prices in a vector named prices and label each price with the corresponding item.

  1. Construct a vector of prices and store it in the variable prices.
  2. Use the variable items to assign names to the elements in the prices vector.
  3. Display the prices vector.

Tudo estava claro?

Seção 2. Capítulo 6
toggle bottom row
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