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Re: Applying a list of 2D paramters to a mathematica function

• To: mathgroup at smc.vnet.net
• Subject: [mg68070] Re: [mg68043] Applying a list of 2D paramters to a mathematica function
• From: Pratik Desai <pratikd at wolfram.com>
• Date: Fri, 21 Jul 2006 17:36:09 -0400 (EDT)
• References: <200607210937.FAA06886@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

Curry Taylor wrote:
>  	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
>   
Hello Curry

Here is one way

indices = {{a,b}, {c,d}, {e,f}}


In[91]:=
f[Sequence@@indices[[#]]]&/@Range[1,Length[indices]]

Out[91]=
{f[a,b],f[c,d],f[e,f]}

Hope this helps

Pratik

• References:
  • Applying a list of 2D paramters to a mathematica function
    • From: Curry Taylor <curry@192.168.0.101>