How to avoid renaming of rows when using rbind inside do.call?

Question

I am trying to bind some sub elements of the elements from the list

The list OC is as follows

> library(quantmod)
> OC <- getOptio         


        

Answer 1

You can avoid do.call(rbind,...) by using data.table::rbindlist.

This will return a data.table. data.tables don't have rownames.

It is also blindingly fast!

library(data.table)
allputs <- rbindlist(lapply(OC, FUN = function(x) x$puts))
# my eyes, I'm blinded!

If you want to include the original rownames as a column then

lputs <- lapply(OC, FUN = function(x) x$puts)


 allputs <- rbindlist(lputs)
 # add the column with rownames
 allputs[,rn := unlist(lapply(lputs, rownames))]

If you don't want to move to data.tables, then you could set the parent names to NULL

 names(lputs) <- NULL

 do.call('rbind', lputs)