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Explain The Usage Of Which() Function In R Language? |
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Answer» which() function determines the position of elements in a LOGICAL vector that are TRUE. In the below EXAMPLE, we are finding the row number WHEREIN the maximum VALUE of variable v1 is recorded. mydata=data.frame(v1 = c(2,4,12,3,6)) which(mydata$v1==max(mydata$v1)) It returns 3 as 12 is the maximum value and it is at 3RD row in the variable x=v1. which() function determines the position of elements in a logical vector that are TRUE. In the below example, we are finding the row number wherein the maximum value of variable v1 is recorded. mydata=data.frame(v1 = c(2,4,12,3,6)) which(mydata$v1==max(mydata$v1)) It returns 3 as 12 is the maximum value and it is at 3rd row in the variable x=v1. |
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