Re: multiple outputs from a function
- To: mathgroup at smc.vnet.net
- Subject: [mg52802] Re: [mg52753] multiple outputs from a function
- From: "David Annetts" <davidannetts at ihug.com.au>
- Date: Mon, 13 Dec 2004 04:23:23 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Hi Ben,
> I feel I must be missing something fundamental...
>
> How do you write a function (or ?) in Mathematica which
> produces more than one output?
>
> Let's say I have some data and I want a single function to
> calculate the mean, variance, std, etc, more than one thing
> and return those? I know that there are builtin functions for
> those parameters, but the point is I want to define functions
> with more than one output.
>
> The only examples I can find are along the lines of:
>
> f[x_,y_]:=x^2+y^2;
>
> which have only a single result.
>
> Is there a different structure altogether, such as a
> Subroutine, which allows multiple results from a single subunit?
Why not define your function
Needs["Statistics`"] (* to be safe ...*)
stats[x_List] := Module[
{local variables},
(* function body *)
Return[{mean, variance, std}];
];
Ie. A function that accepts a list and returns another list. The return
list has three elements, mean variance & std deviation of the original list.
Rephrasing this
mean = First[stats[yourList]];
var = stats[yourList][[2]];
std = Last[stats[yourList]];
Regards,
Dave.
--
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.296 / Virus Database: 265.5.0 - Release Date: 9/12/2004
- Follow-Ups:
- Re: Re: multiple outputs from a function
- From: DrBob <drbob@bigfoot.com>
- Re: Re: multiple outputs from a function