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'?
>> 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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