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MathGroup Archive 2007

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Re: Serious Problem with GridLines

  • To: mathgroup at smc.vnet.net
  • Subject: [mg79800] Re: Serious Problem with GridLines
  • From: "David Park" <djmpark at comcast.net>
  • Date: Sat, 4 Aug 2007 06:04:43 -0400 (EDT)
  • References: <f8s2ub$1q3$1@smc.vnet.net>

I reveived a nice answer from Chris Chiasson who passed on an answer from 
James Mulnix at WRI Technical Support.

It appears that Graphics now has Method as an option and among the methods 
are the following:

Method -> {"AxesInFront" -> True/False}
Method -> {"GridLinesInFront" -> True/False}

and that gives the control we need.

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


"David Park" <djmpark at comcast.net> wrote in message 
news:f8s2ub$1q3$1 at smc.vnet.net...
> Pre-Version 6 Mathematica had an obscure option AxesFront that was buried 
> in
> the Graphics`FilledPlot` package. This option, when set to True, would
> ensure that both the axes and any GRID LINES were always in front of any
> other graphics. I always thought that they should make AxesFront a general
> Graphics option.
>
> What WRI did instead, in Version 6, is automatically ensure that axes 
> (along
> with their ticks and labels) are always in front and they let GridLines 
> take
> the hindmost. There is no longer any (simple) way to force grid lines to 
> be
> in front.
>
> In the documentation they state: "In some plots, grid lines can be
> completely occluded by the image. Mesh can be used instead, to place the
> lines above the graphic." But this will only work for plots like
> DensityPlot. Generally, Mesh is no substitute at all for GridLines. 
> Consider
> the following plot:
>
> ListLogPlot[Table[PartitionsQ[n], {n, 50}],
> Filling -> Bottom,
> FillingStyle -> Lighter@Orange,
> Joined -> True,
> Frame -> True,
> Mesh -> True,
> GridLines -> Automatic,
> GridLinesStyle -> LightGray]
>
> Using Mesh only puts dots along the curve. We could obtain a partial
> solution by using Opacity on the filling along with darker grid lines:
>
> ListLogPlot[Table[PartitionsQ[n], {n, 50}],
> Filling -> Bottom,
> FillingStyle -> Opacity[0.6, Lighter@Orange],
> Joined -> True,
> Frame -> True,
> GridLines -> Automatic,
> GridLinesStyle -> Gray]
>
> but I prefer to keep the grid lines quite faint.
>
> If we are to lose the choice then it would be much better if GridLines 
> were
> treated the same as Axes and were always automatically in front.
>
> -- 
> David Park
> djmpark at comcast.net
> http://home.comcast.net/~djmpark/
>
>
> 



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