On Jan 1, 2010, at 4:42 PM, Peng Yu wrote:
On Fri, Jan 1, 2010 at 3:19 PM, Peng Yu <pengyu...@gmail.com> wrote:
On Fri, Jan 1, 2010 at 2:54 PM, Dylan Beaudette
<dylan.beaude...@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
One more question. Is there a way to suppress the output to the screen
'Error in read.table("empty_data.txt") : no lines available in input'?
As always, you should try reading the full help page. I know it must
seem onerous but in this case (re-?)read all of the help page for "try".
--
David.
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...@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
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
