How to export data with defined decimal places
Use format() or formatC() to convert your numeric data to character and then "call write.table on that." e.g.
z <-formatC(pi,digits=10,format="f") z
[1] "3.1415926536" If this still is not clear to you, I give up, as I do not know how to make it any clearer. Perhaps someone else can. -- Bert
On Thu, Mar 7, 2013 at 4:24 PM, Marino David <davidmarino838 at gmail.com> wrote:
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 at 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 at 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 at 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
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-- 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
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