Re: a little more complex list operation

• To: mathgroup at smc.vnet.net
• Subject: [mg40259] Re: a little more complex list operation
• From: atelesforos at hotmail.com (Orestis Vantzos)
• Date: Fri, 28 Mar 2003 04:31:25 -0500 (EST)
• References: <b5uoth\$lks\$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

```The principle is simple: write the element-operation as a pure
function and map it on the list:
{f[#[[1]]],g[#[[2]]]}& /@ data

Alternatively you can 'apply' the function to the elements of the
list:
{f[#1],g[#2]}& @@@ data

Orestis

Nathan Moore <nmoore at physics.umn.edu> wrote in message news:<b5uoth\$lks\$1 at smc.vnet.net>...
> Thanks very much for all the previous replies.  Another simple question -
> though I guess this will require more complex syntax.  Suppose I have the
> list,
>
> data = {{x1,y1},{x2,y2},{x3,y3}}
>
> and I want to produce the result (for fitting/plotting)
>
> data2 = {{f[x1],g[y1]},{f[x2],g[y2]},{f[x3],g[y3]}}
>
> I assume that if there was only one transform I wanted to apply, f[x],
> then I could say
> 	data2 = f[data]
> but how about this more complicated transform with functions f and g?
>
> again thanks!  Your replies have been very helpful!
>
> Nathan Moore, University of Minnesota Physics

```

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