CODEWITHSUNDEEP
rconcatenation
Aurora
Aurora

Reputation: 23

How can I combine logical vectors?

Good morning,

I am coding in R. I have three logical vectors :

  1 2 3 4 5 6
a T T F F T F
b F T F F F F
c F F F T F F

And I would like to obtain a vector telling me if a position is set to true in at least one of the three vector :

  1 2 3 4 5 6
a T T F T T F

I have tried to used :

Reduce("&&",a,b,c)

But it didn't work.

Thank you if you have any idea or advice to solve my problem,

Upvotes: 2

Views: 3910

Answers (3)

Onyambu
Onyambu

Reputation: 79208

since your data is in a matrix format, you can do:

colSums(dat)>0
    1     2     3     4     5     6 
 TRUE  TRUE FALSE  TRUE  TRUE FALSE

data:

dat=read.table(text="  1 2 3 4 5 6
a T T F F T F
b F T F F F F
c F F F T F F",strip=T,h=T)
names(dat)=1:6

Upvotes: 2

PKumar
PKumar

Reputation: 11128

May be this can do as well:

Reduce(`+`,list(a,b,c)) > 0

or more simply could be:

a+b+c > 0

Where Input can be:

a <- c(TRUE, TRUE, FALSE, FALSE, TRUE, FALSE)
b <- c(FALSE, TRUE, FALSE, FALSE, FALSE, FALSE)
c <- c(FALSE, FALSE, FALSE, TRUE, FALSE, FALSE)

Output:

> Reduce(`+`,list(a,b,c)) > 0
[1]  TRUE  TRUE FALSE  TRUE  TRUE FALSE

Upvotes: 1

akrun
akrun

Reputation: 887078

We can use | in this case

a|b|c

If there are multiple vectors, place it in a list and use Reduce with |

Reduce(`|`, list(a, b, c))

data

a <- c(TRUE, TRUE, FALSE, FALSE, TRUE, FALSE)
b <- c(FALSE, TRUE, FALSE, FALSE, FALSE, FALSE)
c <- c(FALSE, FALSE, FALSE, TRUE, FALSE, FALSE)

Upvotes: 5

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