[R] Creation of text files for use with UCODE_2005

[R. Michael Weylandt]

On Fri, Sep 14, 2012 at 4:33 PM, Jesse Robinson <jrobin02 at syr.edu> wrote:
> Hello,
>
> I'm new to R-help, although I am a frequent user of its resources. I am
> using the package REACTRAN to run some relatively simple transport modeling
> (which we hope will evolve greater functionality over time). I would like to
> optimize model parameters to match observed field data, and am interested in
> using UCODE_2005 for this, which our lab has previously used to great
> success.
>
> The problem: creating the template and input files from R poses difficulty,
> as the position of elements (strings, numerics, observation data and labels)
> have to be exact in terms of spacing and width. Is there a package or
> resource available that can help printing instruction files that simplify
> this? You can imagine that if 5 spaces were required between variables in
> rows, then 7 between the next, then 9, etc. this would be challenging.

Have you come across the write.fwf() function before? It might make
that much easier.

Cheers,
Michael

> Example (pasting here distorts space width):
>
> jtf !                                        # FREE FORMAT
> 5.1  2.7  50.                                # HeadLeft HeadRight
> WidthOfModel
> !K                  ! !w                  !  # UCODE will Substitute K and W
> with many signigifcant figures
>
> Thanks very much for any suggestions!
> Jesse
>
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> --
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>
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