Hi!

    When I use the function dba to create a dba object, I always encounter the error : 

Error in if (file.info(peaks)$size > 0) { : 
  missing value where TRUE/FALSE needed

my code is :

a <- dba(sampleSheet = 'samplesheet.csv')

and the samplesheet.csv is as follows :

the peaks files are calculated by macs2.

Can someone give me some advices? Many thanks!

This error is saying that there is an issue accessing one or more of the Peaks file(s). You can run file.info() on the Peaks files, eg

file.info("zh11_drought_01_peaks.xls")

For each peak file, to make sure they are all there with read access and actual data inside.