Hi,

I am trying to merge two different bam files with Rsamtools in Rstudio. And this is how I am trying to do it:

mergeBam(files = files[c(3,5)], destination = "O:/ChIPseq_results_files/bam_files/merged_bam_files")

where files is the list of bam files I have in a given directory and 3 and 5 the files I am trying to merge (that is why I write files[c(3,5)]).

However, I am getting back this error:

Error in value[[3L]](cond) : 
  'mergeBam' 'destination' exists, 'overwrite' is FALSE
  destination: O:/ChIPseq_results_files/bam_files/merged_bam_files

Thanks for your assistance