[R] write.fortran

baptiste auguie baptiste.auguie at googlemail.com
Wed Mar 10 10:23:27 CET 2010

Dear all,

I'm trying to write tabular data to a text file, these data will be
the input of a Fortran program. The format needs to be
"(i7,2x,7(e15.7,2x))". I have not been able to find a clean way of
producing this output with write.table. I searched for a
"write.fortran" function similar to read.fortran() in package utils
but I couldn't find any. Below is a small example of what I'm trying
to achieve, but it's clearly suboptimal in many ways,

m <- cbind(seq(1, 5), matrix(rnorm(7*5), ncol=7))

do.call(cat, c(lapply(seq(1, nrow(m)), function(ii){
  x <- m[ii, ]
  sprintf("%i  %15.7e  %15.7e  %15.7e  %15.7e  %15.7e  %15.7e  %15.7e
\n", ii , x[1],x[2],x[3],x[4],x[5],x[6],x[7])
}), list(sep="")))

Best regards,


R version 2.10.1 RC (2009-12-06 r50690)

[1] en_GB.UTF-8/en_GB.UTF-8/C/C/en_GB.UTF-8/en_GB.UTF-8

attached base packages:
[1] tools     stats     graphics  grDevices utils     datasets
methods   base

other attached packages:
[1] foreign_0.8-38

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