Re: Help parsing a text file and assigning variables

[Eric]

On 07/04/2015 03:20 PM, Juan Pablo Carbajal wrote:
> On Sat, Jul 4, 2015 at 11:06 PM, Eric <address@hidden> wrote:
> > Hello,
> >
> > I am trying to read a simple spice netlist file into octave and assign the
> > variables listed with the values listed in the file.  The file is a text
> > file.
> >
> > An example of the file I am trying to import is:
> >
> > ------------------------------------------------------
> > V1 1 0 12
> > R1 1 2 1000
> > R2 2 0 2000
> > R3 2 0 2000
> >
> > -------------------------------------------------------
> >
> > I would like to read the file and automatically create and assign the
> > variables:
> >
> > V1 = 12
> > R1 = 1000
> > R2 = 2000
> > R3 = 2000
> >
> > where the first element of each line is the variable name and the fourth
> > element of each line is the value.
> >
> > I have been looking through google and the octave documents for some
> > examples but have not been successful.
> >
> >
> > Thank you for any help.
> >
> >
> > Eric Meddleton
> >
> > _______________________________________________
> > Help-octave mailing list
> > address@hidden
> > https://lists.gnu.org/mailman/listinfo/help-octave
>
> Have you tried something like
>
> f = fopen ("data.txt");
> nvar = 4;
> for i = 1:nvar
>     [var x y z] = fscanf (f,"%s %d %d %d","C")
>     eval (sprintf ("%s = %d", var, z))
> endfor
>
> Where data.txt is your file (you have remove the "-----------------")
> and nvar is the number of variables you want to read.
> You can improve from here, I guess.

Thank you,

I should not of included the  '---------------------" as it is not part 
of the text file and I just put them in to separate the text file from 
the rest of the email.

I did get a solution based on your recommendation and some more 
searching I found on the matlab central website:


f = fopen("ex.cir");
inputs = textscan(f, '%s %d %d %f','delimiter', ' ');
fclose(f);

variables = genvarname(inputs{1,1});
values = inputs{1,4};

for i = 1:size(variables,1)
        eval([cell2mat(variables(i)) '= values(i);']);
end

Thank you,

Eric Meddleton