Course Content
R Introduction: Part I
1. Basic Syntax and Operations
R Introduction: Part I
Deleting
Since you've learned how to add elements to a vector, it's only natural to learn how to remove them as well. Everything builds up to this.
To remove an element from a vector, use the -
sign before the index of the element you wish to remove. Remember, this action doesn't directly overwrite your vector, so reassignment will typically be necessary. To remove multiple elements, you can provide a vector of indices after the -
sign. For instance, to remove the third element from the grades
vector, the operation would look like this:
Similarly, to eliminate the second and fourth elements from the initial grades
vector, you would proceed as follows:
Note
Keep in mind that the operations shown in the examples will not alter the original vectors permanently. To save the changes, you need to reassign the result to the same vector (or to a new one, if needed).
Task
From the previous task you have the prices
vector with the prices of 6 items. Your task is:
- Remove the
'Dining chair'
item from theprices
vector. This item is fourth in the vector. Save the changes by reassignment. - Display the modified
prices
vector.
Everything was clear?