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MathGroup Archive 2007

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Re: Grid

  • To: mathgroup at smc.vnet.net
  • Subject: [mg80951] Re: Grid
  • From: Jon McLoone <jonm at wolfram.co.uk>
  • Date: Thu, 6 Sep 2007 05:26:25 -0400 (EDT)
  • References: <fblk36$qic$1@smc.vnet.net>

On Sep 5, 7:58 am, John <j... at lehigh.edu> wrote:
> I want to create a 9x9 grid that has specified positive integers,
> fewer than 81, entered in specified cells. I used SparseArray to enter
> the specified numbers in the specified cells, but it put a 0 in every
> unspecified cell.How do I convert the zeros to blanks?
>
> John

Use the third argument for SparseArray that gives the default value.
eg
Grid[SparseArray[{3, 3} -> 1, {9, 9}, " "], Frame -> All]

Jon McLoone
http://members.wolfram.com/jonm



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