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Re: AbsoluteOptions and ViewMatrix

  • To: mathgroup at smc.vnet.net
  • Subject: [mg96935] Re: AbsoluteOptions and ViewMatrix
  • From: "Sjoerd C. de Vries" <sjoerd.c.devries at gmail.com>
  • Date: Fri, 27 Feb 2009 06:16:16 -0500 (EST)
  • References: <go63i7$pob$1@smc.vnet.net>

The docs page on ViewMatrix states:

With the setting ViewMatrix->Automatic, explicit forms for the matrix
m can be found using AbsoluteOptions[g,ViewMatrix].

However, as you mentioned this does not work and the docs are
evidently wrong here.

I tried everything I could think of, but this is a hard nut to crack.

On Feb 26, 2:56 pm, Sebastien Roy <r... at iro.umontreal.ca> wrote:
> When viewing any graphics such as:
>
> s=PolyhedronData["Dodecahedron"];
>
> AbsoluteOption works as advertised with PlotRange, but not ViewMatrix:
>
> AbsoluteOptions[s,PlotRange]    (* give you the actual plot range, no=
t
> "All" *)
>
> AbsoluteOptions[s,ViewMatrix]   (* give you "Automatic", not the
> actual value *)
>
> I understand that the actual PlotRange value is known to the kernel,
> but not the ViewMatrix, which is handled in the notebook.
>
> Does anybody know how to get the ViewMatrix value out of the Notebook?
>
> Sebastien



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