output variables from functions

[Jim Maas]

> You can use ca as global variable by adding line "global ca" both to
> main script and the function (then it's value will be set every time
> the function is called, and it would bea vailable to ther functions -
> you need to add "global ca" also there)
>
> Ivan Sutoris
>
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> ----- End forwarded message -----
> Or you can include the value of this variable to the array of results that
> it returns: instead of y=f(x), use [x,y]=f(x).
> Cheers, Avraham
>   

Thanks Avraham,

I've tried this many times, but then when I try to use this variable 
somewhere else in the script I just get an error message saying that it 
is unassigned? How can this be?

Thanks

Jim

----
Jim Maas