[R] write.fortran

[Berend Hasselman]

baptiste auguie-5 wrote:
> 
> 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="")))
> 

How about this (found after a lot fiddling and all sorts of error
messages:-))

do.call(cat,c(lapply(seq(1,nrow(m)),function(k)
{c(sprintf("%7d",m[k,1]),sprintf("%16.7e",m[k,2:8]),"\n")}),list(sep="")))

This is a lot easier

 for(k in
seq(1,nrow(m))){cat(c(sprintf("%7d",m[k,1]),sprintf("%16.7e",m[k,2:8]),"\n"))

Berend
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