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Re: Question

  • To: mathgroup at
  • Subject: [mg110272] Re: Question
  • From: David Carraher <david_carraher at>
  • Date: Fri, 11 Jun 2010 02:09:31 -0400 (EDT)
  • References: <huntc8$bka$> <>

Why not use...?

In[1]:= Array[x, 10]

Out[1]= {x[1], x[2], x[3], x[4], x[5], x[6], x[7], x[8], x[9], x[10]}

David C

From:   David Bailey <dave at>
To:     mathgroup at
Date:   06/10/2010 02:39 PM
Subject: [mg110272]        [mg110261] Re: Question

On 09/06/10 12:19, David Lengacher wrote:
> How can you create a set of variables: x1 to xn  using the Table, or 
> similar function?    I need a large list of variables to use in a linear
> program and so far have to type them out manually.
> David

The simple answer is:

myvars=Table[ToExpression["XX" <> ToString[k]], {k, 1, 10}]

However, working with created variable names like that can be quite 
tricky because either they evaluate when you don't want them to, or you 
end up assigning to an expression such as myvars[[5]], rather than the 
variable itself.

For that reason, you may want to present a bit more of your problem so 
as to get a complete solution.

David Bailey

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