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
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