CODEWITHSUNDEEP
rloopsrbind
Andrew
Andrew

Reputation: 7545

rbind data.frame outputs from a loop

I want to rbind a loop that generates data.frames. Here's a [incorrect] loop of the general idea I'm looking for. 

for (i in 1:2){
a <- c(2, (i+10))
b <- c((i+10)), 5))
c[i] <- data.frame(a,b)
}
rbind(c)

I want an output like this:

2  11
11  5
2  12
12  5

This question has been asked before, but the answer was a direct solution, with no explanation. I don't know how to read it. It involved do.call and mget.

Upvotes: 2

Views: 24862

Answers (1)

User7598
User7598

Reputation: 1678

You don't have to use do.call for this. Just modify the loop as shown below:

out=NULL
for (i in 1:2){
a <- c(2, (i+10))
b <- c((i+10), 5)
c <- data.frame(a,b)
out=rbind(out,c)
}
out
#  a  b
#  2 11
# 11  5
#  2 12
# 12  5

Note: You had a bunch of extra parentheses for the b object. That I also took out.

Upvotes: 10

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