Thread Subject:

Defining data table globally

I wrote a code that has this line:

data = janload ('nasa.fit');

This "data" contains thermodynamics tables, and I used this "data" in subroutines of this code but I got the "Undefined function or variable 'data'." error when I use it in subroutines and since subroutines are used for iteration so if I add "data = janload ('nasa.fit');" in subroutines it keeps loading it in every iteration. How can I define "data" as global?

"Exergy " <faraz.aria@gmail.com> wrote in message <k90euc$ck$1@newscl01ah.mathworks.com>...
> I wrote a code that has this line:
>
> data = janload ('nasa.fit');
>
> This "data" contains thermodynamics tables, and I used this "data" in subroutines of this code but I got the "Undefined function or variable 'data'." error when I use it in subroutines and since subroutines are used for iteration so if I add "data = janload ('nasa.fit');" in subroutines it keeps loading it in every iteration. How can I define "data" as global?

Simply add the statement:

global data

to each subroutinbe, function, workspace, etc.
that uses the variable data. See also:

doc global

On 11/26/2012 1:29 PM, someone wrote:
> "Exergy " <faraz.aria@gmail.com> wrote in message
> <k90euc$ck$1@newscl01ah.mathworks.com>...
>> I wrote a code that has this line:
>>
>> data = janload ('nasa.fit');
>>
>> This "data" contains thermodynamics tables, and I used this "data" in
>> subroutines of this code but I got the "Undefined function or variable
>> 'data'." error when I use it in subroutines and since subroutines are
>> used for iteration so if I add "data = janload ('nasa.fit');" in
>> subroutines it keeps loading it in every iteration. How can I define
>> "data" as global?
>
> Simply add the statement:
>
> global data
>
> to each subroutinbe, function, workspace, etc. that uses the variable
> data. See also:
>
> doc global

Or, instead of making it global and having the resultant difficulties
that can bring w/ code maintenance and reliability, simply add 'data' to
the argument list of functions requiring it and pass the array to them.
  No need to reread it every time.

I'd name it something more apropos than just 'data' reflecting what it
actually is as well...

--

dpb <none@non.net> wrote in message <k90g6l$apn$1@speranza.aioe.org>...
> On 11/26/2012 1:29 PM, someone wrote:
> > "Exergy " <faraz.aria@gmail.com> wrote in message
> > <k90euc$ck$1@newscl01ah.mathworks.com>...
> >> I wrote a code that has this line:
> >>
> >> data = janload ('nasa.fit');
> >>
> >> This "data" contains thermodynamics tables, and I used this "data" in
> >> subroutines of this code but I got the "Undefined function or variable
> >> 'data'." error when I use it in subroutines and since subroutines are
> >> used for iteration so if I add "data = janload ('nasa.fit');" in
> >> subroutines it keeps loading it in every iteration. How can I define
> >> "data" as global?
> >
> > Simply add the statement:
> >
> > global data
> >
> > to each subroutinbe, function, workspace, etc. that uses the variable
> > data. See also:
> >
> > doc global
>
> Or, instead of making it global and having the resultant difficulties
> that can bring w/ code maintenance and reliability, simply add 'data' to
> the argument list of functions requiring it and pass the array to them.
> No need to reread it every time.
>
> I'd name it something more apropos than just 'data' reflecting what it
> actually is as well...
>
> --
Adding "data" to input variables worked.
Thanks