[R] Write text file in Fortran format

[Jim Lemon]

Sorry, line 9 should be:

if(substr(air[airline],1,1) == " ")

Jim

On Thu, Sep 22, 2022 at 8:51 AM Jim Lemon <drjimlemon using gmail.com> wrote:
>
> Hi Javad,
> The example text file you sent doesn't appear to have the two
> "trailer" lines that you describe. I would try this brute force method
> as all you seem to want is to multiply the third column values by a
> constant:
>
> air<-readLines("Air.txt")
> # define the column 3 field
> begincol3<-29
> endcol3<-42
> widthcol3<-14
> lenline<-117
> for(airline in 1:length(air)) {
>  # is this a data line?
>  if(substr(air[airline]) == " ")
>  air[airline]<-paste0(substr(inputline,1,begincol3-1),
>   formatC(as.double(substr(inputline,begincol3,endcol3))*mult3,
>    digits=5,width=widthcol3,format="f"),
>   substr(inputline,endcol3+1,lenline))
> }
> writeLines(air,"Air2.txt")
>
> Jim
>
> On Wed, Sep 21, 2022 at 9:25 PM javad bayat <j.bayat194 using gmail.com> wrote:
> >
> > Dear Jim;
> > I have no knowledge of the FORTRAN language. The text file is a model's output file and I know that the format is in FORTRAN. I want to write a text file exactly similar to the attached text file using R programming. The steps below show my goal:
> > 1- Read the text file without the first 8 and last 2 rows as a dataframe.
> > 2- Double the 3rd column values (or multiply by specific number).
> > 3- Insert the removed first 8 rows of the original text file as header in the dataframe.
> > 4- Insert the last 2 rows of the original text file at the end of dataframe.
> > 5- Write the dataframe as a new text file exactly similar to the original text file.
> > Is it possible?
> > Sincerely
> >
> >
> >
> >
> >
> >
> > On Wed, Sep 21, 2022 at 3:29 PM Jim Lemon <drjimlemon using gmail.com> wrote:
> >>
> >> Hi,
> >> There was a .txt attachment that is some type of data file. Maybe what
> >> you mean is can the header be stripped and the rest written out in a
> >> format that can be input with a FORTRAN read routine. Yes, you just
> >> have to read it into a data frame and write it out so that it is in
> >> either free or fixed format. You will have to define the variable
> >> names in your FORTRAN code and work out the input format
> >> specifications for the fields.
> >>
> >> Jim
> >>
> >> On Wed, Sep 21, 2022 at 8:30 PM Ebert,Timothy Aaron <tebert using ufl.edu> wrote:
> >> >
> >> > This post was empty.
> >> >
> >> > Tim
> >> >
> >> > From: R-help <r-help-bounces using r-project.org> On Behalf Of javad bayat
> >> > Sent: Wednesday, September 21, 2022 2:09 AM
> >> > To: R-help using r-project.org
> >> > Subject: [R] Write text file in Fortran format
> >> >
> >> >
> >> >
> >> >         [[alternative HTML version deleted]]
> >> >
> >> > ______________________________________________
> >> > R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
> >> > https://stat.ethz.ch/mailman/listinfo/r-help
> >> > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> >> > and provide commented, minimal, self-contained, reproducible code.
> >
> >
> >
> > --
> > Best Regards
> > Javad Bayat
> > M.Sc. Environment Engineering
> > Alternative Mail: bayat194 using yahoo.com