Hi Bert,

I read both options and write.table help, but I still can't make it to save
the data into txt file with fixed precision.

To let you know more clearly what I want, I still you use the previous
simple example to illustrate.

I want to save pi into pi.txt file with 10 decimal places, that
is 3.1415926536. How to do it?



Thanks

Marin



2013/3/8 Marino David <davidmarino838@gmail.com>

> Hi Bert,
>
> I want to save the data into .txt file for another software process.
>
> Thanks for suggestion.
>
>  2013/3/8 Bert Gunter <gunter.berton@gene.com>
>
>> ?write.table
>>
>> which says, under details:
>>
>> "In almost all cases the conversion of numeric quantities is governed
>> by the option "scipen" (see options), but with the internal equivalent
>> of digits=15. For finer control, use format to make a character
>> matrix/data frame, and call write.table on that. "
>>
>> Not sure if this is what you want, as "export" is rather vague.
>>
>> -- Bert
>>
>> On Thu, Mar 7, 2013 at 12:52 PM, Marino David <davidmarino838@gmail.com>
>> wrote:
>> > Hi all mailing listers,
>> >
>> > I want to export data with specified precision into .txt file. How can I
>> > make it? See  below
>> >
>> > sprintf("%.10f",pi)
>> > [1] "3.1415926536"
>> >
>> > when carry out write.matrix(pi,"pi.txt"), 3.141592653589793115998 in
>> pi.txt
>> > file not with 10 decimal places like using sprintf("%.10f",pi)
>> >
>> >
>> > Thanks
>> >
>> > Marino
>> >
>> >         [[alternative HTML version deleted]]
>> >
>> > ______________________________________________
>> > 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<http://www.r-project.org/posting-guide.html>
>> > and provide commented, minimal, self-contained, reproducible code.
>>
>>
>>
>> --
>>
>> Bert Gunter
>> Genentech Nonclinical Biostatistics
>>
>> Internal Contact Info:
>> Phone: 467-7374
>> Website:
>>
>> http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm
>>
>
>

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