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>