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Re: Table constructed from two lists

  • To: mathgroup at smc.vnet.net
  • Subject: [mg123738] Re: Table constructed from two lists
  • From: DrMajorBob <btreat1 at austin.rr.com>
  • Date: Sat, 17 Dec 2011 02:42:02 -0500 (EST)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • References: <201112161048.FAA06818@smc.vnet.net>
  • Reply-to: drmajorbob at yahoo.com

Codes that work include:

list1 = {1, 2, 3};
list2 = {4, 5, 6};

Table[list1[[i]] + list2[[i]], {i, Range[Length[list1]]}]

{5, 7, 9}

Table[list1[[i]] + list2[[i]], {i, Length[list1]}]

{5, 7, 9}

Table[list1[[i]] + list2[[i]], {i, 3}]

{5, 7, 9}

OR SIMPLY:

list1 + list2

{5, 7, 9}

Bobby

On Fri, 16 Dec 2011 04:48:57 -0600, Alan Forrester <af17g11 at gmail.com>  
wrote:

> Hello
>
> I'd like to construct a table by making each element of the table a
> function of elements of a couple of lists I have specified, but I'm
> getting an error message that seems not to make any sense.
>
> So I have a couple of lists, like these
> list1 = {1,2,3}
> list2 = {4,5,6}
>
> My code for the table I want to construct from those lists is a bit
> like this:
> Tplus = [list1[i]+list2[i], {i, Range[Length[list1]]}].
>
> The error I get claims that i is not an integer or a list of integers,
> but Range[Length[list1]] is a list of integers.
>
> I would appreciate any ideas on what I'm doing wrong.
>
> Alan Forrester
>


-- 
DrMajorBob at yahoo.com



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