[R] vectorization condition counting

[Guillaume2883]

Hi all,

I am working on a really big dataset and I would like to vectorize a
condition in a if loop to improve speed.

the original loop with the condition is currently writen as follow:

if(sum(as.integer(tags$tag_id==tags$tag_id[i]))==1&tags$lgth[i]<300){
    
     tags$stage[i]<-"J"
    
   }

Do you have some ideas ? I was unable to do it correctly
Thanking you in advance for your help

Guillaume



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