A vector's rank is its location relative to the other values in an ordered vector. For example, consider the vector v = c(8, 4, 10, 12, 6). The value 8 ranks 3 because it is the third largest value in the vector sorted in increasing order. Similarly, the rank of 4 is 1 because it is the vector's first lowest value.
rank() functionBy default, the rank() function in R gives the rank of each value in a vector as follows:
# creating a vector of valuesv <- c(8, 4, 10, 12, 6)# getting the rank of each value in the vectorrank(v)
The code above gives us the respective rank of each corresponding value in the vector.
Note: In R, the
rank()function uses theand assigns same ranks to items with the same value. competition ranking algorithm A method used to assign ranks to a list of items based on their numerical or alphabetical values.
Let's say we want to get the rank of a particular element in the vector. We use square bracket notation to extract that element first, then use the rank() as follows:
# creating a vector of valuesv <- c(8, 4, 10, 12, 6)# getting the rank of second element (i.e., 4) in the vectorrank(v[2])
The code above tells us that the second element in the vector has a rank of 1 because it is the vector's first-smallest value.
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