How to not to terminate read.table if the input file is empty?

On Fri, Jan 1, 2010 at 2:54 PM, Dylan Beaudette
<dylan.beaudette at gmail.com> wrote:

?try

This works. Thank you!

f=try(read.table("empty_data.txt"))

Error in read.table("empty_data.txt") : no lines available in input

if(class(f)=='try-error') {

+ ? f=NULL
+ }

print(f)

NULL

g=try(read.table("data.txt"))
print(g)

? ?V1 ? ? V2 ? ? V3 ? ? V4
1 name title1 title2 title3
2 row1 ? 10.1 ? 20.1 ? 30.1
3 row2 ? 12.1 ? 22.1 ? 32.1

On Fri, Jan 1, 2010 at 12:41 PM, Peng Yu <pengyu.ut at gmail.com> wrote:

read.table terminates the program if the input file is empty. Is there
way to let the program continue and return me a NULL instead of
terminating the program?

$ Rscript read_empty.R

read.table("empty_data.txt")

Error in read.table("empty_data.txt") : no lines available in input
Execution halted
$ cat read_empty.R
read.table("empty_data.txt")
$ cat empty_data.txt; echo EOF
EOF