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
> 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
>>
>> ______________________________________________
>> 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.
>>
>
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