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Re: Re: Dividers formatting in Grid

  • To: mathgroup at smc.vnet.net
  • Subject: [mg83195] Re: [mg83164] Re: Dividers formatting in Grid
  • From: Murray Eisenberg <murray at math.umass.edu>
  • Date: Wed, 14 Nov 2007 04:52:58 -0500 (EST)
  • Organization: Mathematics & Statistics, Univ. of Mass./Amherst
  • References: <fh9920$aue$1@smc.vnet.net> <200711130844.DAA27938@smc.vnet.net>
  • Reply-to: murray at math.umass.edu

But then why does

   Grid[Join[{{"First", "Second", "Third"}}, Partition[Range[6], 3]],
        Dividers -> {{Green, 2 -> Red, 3 -> Red}, {2 -> Blue}}]

work as expected?  Why is it OK to mix the two types of specifications 
when the first item is Green but not when the first item is None (or False)?

David Park wrote:
> Murray,
> 
> It does seem complicated! And it does look like something of a bug. I think 
> the last item for spec_i choices is the key.
> 
> {spec,rules}          use rules to override specifications in spec
> 
> Grid[Join[{{"First", "Second", "Third"}}, Partition[Range[6], 3]],
>  Dividers -> {{None, {2 -> Red, 3 -> Red}}, {2 -> Blue}}]
> 
> None specifies no vertical dividers but the second list overrides specific 
> positions.
> 
> However, it is not necessary to specify None because if we use a list of 
> rules then they are the only dividers that are drawn.
> 
> Grid[Join[{{"First", "Second", "Third"}}, Partition[Range[6], 3]],
>  Dividers -> {{2 -> Red, 3 -> Red}, {2 -> Blue}}]
> 

-- 
Murray Eisenberg                     murray at math.umass.edu
Mathematics & Statistics Dept.
Lederle Graduate Research Tower      phone 413 549-1020 (H)
University of Massachusetts                413 545-2859 (W)
710 North Pleasant Street            fax   413 545-1801
Amherst, MA 01003-9305


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