Deleting Vector Elements
Elements can be removed from a vector by placing a minus sign (-) before their indices. This creates a new vector without those elements.
Removing a Single Element
You can exclude one element by its index.
Example
12345grades <- c(80, 75, 95, 100) names(grades) <- c('Math', 'Physics', 'English', 'Literature') # Remove the third grade (English) grades[-3]
Removing Multiple Elements
Provide a vector of indices to remove more than one element.
Example
12345grades <- c(80, 75, 95, 100) names(grades) <- c('Math', 'Physics', 'English', 'Literature') # Remove the second and fourth elements (Physics and Literature) grades[-c(2,4)]
Applying Changes
The changes shown in the examples are temporary. To make them permanent, you must reassign the result to the original (or, if needed, different) variable.
123456789grades <- c(80, 75, 95, 100) names(grades) <- c('Math', 'Physics', 'English', 'Literature') # Changes are not applied grades[-3] grades # Changes are applied grades <- grades[-3] grades
Swipe to start coding
You have the prices vector with the prices of 6 items. Your task is to:
- Remove the
'Dining chair'item from thepricesvector. This item is the fourth in the vector. Save the changes by reassignment. - Display the modified
pricesvector.
Solution
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Elements can be removed from a vector by placing a minus sign (-) before their indices. This creates a new vector without those elements.
Removing a Single Element
You can exclude one element by its index.
Example
12345grades <- c(80, 75, 95, 100) names(grades) <- c('Math', 'Physics', 'English', 'Literature') # Remove the third grade (English) grades[-3]
Removing Multiple Elements
Provide a vector of indices to remove more than one element.
Example
12345grades <- c(80, 75, 95, 100) names(grades) <- c('Math', 'Physics', 'English', 'Literature') # Remove the second and fourth elements (Physics and Literature) grades[-c(2,4)]
Applying Changes
The changes shown in the examples are temporary. To make them permanent, you must reassign the result to the original (or, if needed, different) variable.
123456789grades <- c(80, 75, 95, 100) names(grades) <- c('Math', 'Physics', 'English', 'Literature') # Changes are not applied grades[-3] grades # Changes are applied grades <- grades[-3] grades
Swipe to start coding
You have the prices vector with the prices of 6 items. Your task is to:
- Remove the
'Dining chair'item from thepricesvector. This item is the fourth in the vector. Save the changes by reassignment. - Display the modified
pricesvector.
Solution
Passez à un bureau pour une pratique réelleContinuez d'où vous êtes en utilisant l'une des options ci-dessousMerci pour vos commentaires !
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