cummax() function in R Language is used to calculate the cumulative maxima of the values of vector passed as arguments.
Syntax: cummax(x)
Parameters:
x: numeric object
Example 1:
# R program to cumulative maxima # Calling cummax() function cummax(6:2) cummax(-2:-6) cummax(3.8:1.2) |
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Output:
[1] 6 6 6 6 6 [1] -2 -2 -2 -2 -2 [1] 3.8 3.8 3.8
Example 2:
# R program to cumulative maxima # Creating vectors x1 <- c(5, 3, 2, 6, 3, 4) x2 <- c(-4, 6, 3) # Calling cummax() function cummax(x1) cummax(x2) |
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Output:
[1] 5 5 5 6 6 6 [1] -4 6 6
Since, the maxima is calculated for the values in decreasing order and hence the above code shows two cumulative values for vectors.
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