[R] conditional output of string to file n times...

[Rui Barradas]

Hello,

Use ?rep.
Since you say you have a file, in the code below I will read the data 
from a connection. Then create the string.


txtfile <- "ABC 3
DDG 5
ABB 2"

tc <- textConnection(txtfile)
df1 <- read.table(tc)
close(tc)

rep(df1[[1]], df1[[2]])
#[1] "ABC" "ABC" "ABC" "DDG" "DDG" "DDG" "DDG" "DDG" "ABB" "ABB"


Hope this helps,

Rui Barradas


Às 14:27 de 06/07/21, Evan Cooch escreveu:
> Suppose I have a file with the the following structure - call the two 
> space-separated fields 'label' and 'count':
> 
> ABC 3
> DDG 5
> ABB 2
> 
> 
> What I need to do is parse each line of the file, and then depending on 
> the value of count, write out the value of 'label' to a new file, but 
> 'count' times. In other words, take the preceding, and output
> 
> ABC
> ABC
> ABC
> DDG
> DDG
> DDG
> DDG
> DDG
> ABB
> ABB
> 
> I was wondering if there was an elegant/simple way to do this? I can do 
> this relatively easily in perl, or awk, but am stumped by getting a bit 
> of R code to accomplish the same thing.
> 
> Many thanks in advance...
> 
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