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Re: Extracting graphics from notebook

  • To: mathgroup at smc.vnet.net
  • Subject: [mg115466] Re: Extracting graphics from notebook
  • From: Chris Degnen <degnen at cwgsy.net>
  • Date: Tue, 11 Jan 2011 19:22:54 -0500 (EST)
  • References: <iggq6a$4gt$1@smc.vnet.net> <ighgl8$ajk$1@smc.vnet.net>

On Jan 11, 11:58 am, Albert Retey <a... at gmx-topmail.de> wrote:
> Am 11.01.2011 06:35, schrieb Chris Degnen:
>
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>
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> > Hi, Can anyone suggest how I can address a graphics object from a
> > saved notebook.  In the example below the most I can do is to
> > CellPrint the object, but I would like to set it to a variable.
>
> > dir = Directory[];
>
> > nb1 = CreateDocument[Plot[Sin[x], {x, 0, 2 Pi}],
> >    NotebookFileName -> dir <> "\\" <> "Sin2Pi.nb"];
>
> > NotebookSave[nb1];
> > NotebookClose[nb1];
>
> > nb2 = NotebookOpen[dir <> "\\" <> "Sin2Pi.nb"];
>
> > SelectionMove[nb2, Next, Cell]
>
> > CellPrint[NotebookRead[nb2]]
> > NotebookClose[nb2];
>
> the NotebookRead returns the cell expression. You can extract the
> Graphics with something like this:
>
> content = NotebookRead[nb2];
>
> Cases[content, GraphicsBox[args___] :> Graphics[args], Infinity][[1]]
>
> for more complicated cases you might need some more care, I don't know
> exactly which features of GraphicsBox (which is basically undocumented)
> are different to those of Graphics, there might e.g. be options that are
> only available for GraphicsBox or need different settings...
>
> hth,
>
> albert


Thanks Albert,  I also found this works:-

content = NotebookRead[nb2];

ToExpression[First[content]]



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