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Re: Dividers formatting in Grid

  • To: mathgroup at smc.vnet.net
  • Subject: [mg83164] Re: Dividers formatting in Grid
  • From: "David Park" <djmpark at comcast.net>
  • Date: Tue, 13 Nov 2007 03:44:08 -0500 (EST)
  • References: <fh9920$aue$1@smc.vnet.net>

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}}]

-- 
David Park
djmpark at comcast.net
http://home.comcast.net/~djmpark/


"Murray Eisenberg" <murray at math.umass.edu> wrote in message 
news:fh9920$aue$1 at smc.vnet.net...
> In the following Grid, why are the two vertical dividers not red?
>
>    Grid[Join[{{"First", "Second", "Third"}}, Partition[Range[6], 3]],
>         Dividers -> {{None, 2 -> Red, 3 -> Red}, {2 -> Blue}}]
>
> (On my Windows XP system with Mathematica 6.01, they are black.)
>
> Note that in the following Grid, the single vertical divider IS red:
>
>    Grid[Join[{{"First","Second"}},Partition[Range[4],2]],
>       Dividers->{{None,2->Red},{2->Blue}}]
>
> Am I not understanding the syntax or semantics of the Dividers option?
>
> -- 
> 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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