Re: Applying multiple functions to multiple sets of arguements
- To: mathgroup at smc.vnet.net
- Subject: [mg42646] Re: Applying multiple functions to multiple sets of arguements
- From: bobhanlon at aol.com (Bob Hanlon)
- Date: Sat, 19 Jul 2003 03:19:30 -0400 (EDT)
- References: <bf8f5g$5ne$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
fncs = {f1, f2, f3, f4};
args = {x1, x2, x3};
Outer[#1[#2]&, fncs, args]
{{f1[x1], f1[x2], f1[x3]}, {f2[x1], f2[x2], f2[x3]},
{f3[x1], f3[x2], f3[x3]}, {f4[x1], f4[x2], f4[x3]}}
Bob Hanlon
In article <bf8f5g$5ne$1 at smc.vnet.net>, rishiroy at umich.edu (Rishi Roy) wrote:
<< I was hoping someone cold help me. I wanted a way to apply
an arbitrary number of functions to an arbitrary number of sets of
arguments.
Meaning if I have n functions: {f1, f2, ...,fn} and m sets of
arguments: {x1, x2, ..., xm}, how can I generate a list like:
{{f1[x1], f1[x2], ...,f1[xm]},{f2[x1], f2[x2],
...,f2[xm]},...,{fn[x1], fn[x2], ...,fn[xm]}}?
I am currently doing this by looping throgh both lists and populating
each results one by one. As expecting this is horribly slow. I was
hoping someone could recommend a faster, functional way to do this. I
tried using map, but couldnt get a handle on it.