R find count of values in vector x which are greater than values in vector y

user_7954055 0
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Suppose there are two vectors 

x = c(20,30,50)

and 

y = c(25,40,60).

Objective is to find the number's in x which are greater than numbers in y .

So here it will be 2 as 30 > 25 and 50 > 40

vector r comparison
2 Answers

We can use outer to do comparison of each element of 'x' with that of 'y', get the colSums and get the count of numbers that are greater than 0 with sum

sum(colSums(outer(x, y, `>`)) > 0)
user_37322710

One way to do this is to define a dataframe with the vectors

y <- data.frame(y=c(25,40,60,11))
x <- data.frame(x=c(20,30,50,12))

Then you can do an easy comparison and retrieval as shown below

> y[y<x]
[1] 11

> y[y>x]
[1] 25 40 60
user_131015480
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