search for: any_funct

...annot coerce class ?"call"? to a data.frame > Calls: write.table ... data.frame -> as.data.frame -> > as.data.frame.default The underlying issue is that somehow the code gave a function call instead of a data.frame or a matrix as an argument to write.table: write.table(quote(any_function())) It may help to run the script with options(error = recover) set or make use of other debugging tips in the free book R Inferno <https://www.burns-stat.com/documents/books/the-r-inferno/> to find out how that happened. -- Best regards, Ivan