Re: Applying a list of 2D paramters to a mathematica function
- To: mathgroup at smc.vnet.net
- Subject: [mg68072] Re: Applying a list of 2D paramters to a mathematica function
- From: "g.omikron" <g.omikron at gmail.com>
- Date: Fri, 21 Jul 2006 17:36:17 -0400 (EDT)
- References: <e9q9l1$83q$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Dear Curry,
i remember i had the same problem which i finally solved...
Unfortunatelly, i don' t remember its final solution but i remember
also that a permanent solution was to modify my initial function
definition from
f[x_,y_] := x + y;
to
f[{x_, y_}] := x + y;
if you do this, i suppose you can get the values of the elements of
lists like the one below
testList = {{a, b},{c, d}, ..., {y,z}},
i.e. you get a list with the values
{a+b, c+d, ..., y+z},
(because f[{a,b}] = a + b)
I'll try to find out the final solution to your problem, which i
remember it's simple...but check the above alternative way... Good Luck
greetings
G.Omikron
Curry Taylor :
> I have (for simplicity) something like this:
>
> f[x_, y_] := x+y;
>
> I want to use this function for a variety of parameters in a list:
>
> indices = {{a,b}, {c,d}, {e,f}, ..}
>
> so that I get
>
> {a+b, c+d, e+f, ..}
>
> Doing the intuitive thing (for me)
>
> f /@ indices
>
> results in
>
> {f[{a, b}], f[{c, d}], f[{e, f}], ..}
>
> but what I want is
>
> {f[a, b], f[c, d], f[e, f], ..}
>
> and that's not what I'm getting. I have tried using Flatten, pure
> functions (Slot # and &), different Map functions, nesting at parameters
> (like {1} and {2}), and other things but I just can't seem to get what I'm
> after. Any help please?
>
> Thank you,
>
> Curry