Re: Variable amount of Buttons in Mathematica
- To: mathgroup at smc.vnet.net
- Subject: [mg92769] Re: Variable amount of Buttons in Mathematica
- From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
- Date: Mon, 13 Oct 2008 06:16:10 -0400 (EDT)
- Organization: The Open University, Milton Keynes, UK
- References: <gcscrf$8l3$1@smc.vnet.net>
SDY wrote:
> I'm trying to write a function that will create a variable number of buttons (based on some input) and relate each button to a function call with a unique parameter value. For example:
>
> array = {1, 2, 3, 4, 5};
> Column[{Row[
> Table[Button[array[[n]], Print[n], ImageSize -> {50, 50}], {n, 1,Length[array], 1}]]}]
>
> Gives me five buttons, labeled 1-5, but each prints 'n' when clicked on.
> How would I change this to print the value of n?
>
> My best guess at this point is that there is a scoping issue with n, but I don't have enough Mathematica experience to know how to assign static values...
When creating a list of buttons, you can use the scooping construct
*With[]* to ensure the evaluation of n:
array = {1, 2, 3, 4, 5};
Row[Table[
With[{n = n},
Button[array[[n]], Print[array[[n]]], ImageSize -> {50, 50}]], {n,
Length[array]}]]
Regards,
-- Jean-Marc