Ignore missing data frames when using rbind.fill on a list of data frames

Question

I have many data frames which are usually in the format file.[i], but occasionally there are missing data frames:

file.1 file.2 file.3 file.4 file.5 file.6 file.7 file.9 file.11 file.13

What I tried to do is this:

 dt <- do.call(rbind.fill, 
              lapply(paste("file.", 1:length(filenames), sep=""), get))

And I get:

Error in FUN(c("file.1", "file.2", "file.3", "file.4", "file.5", "file.6",  : 
  object 'file.8' not found

Is there a way to make rbind.fill ignore the missing data frames?

Answer 1

Try this:

obj.names <- paste0("file.", seq_along(filenames))
dt <- rbind.fill(mget(Filter(exists, obj.names)))