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Re: Cartesian[(x, y, z)] is not a valid coordinate system specification

  • To: mathgroup at
  • Subject: [mg44567] Re: Cartesian[(x, y, z)] is not a valid coordinate system specification
  • From: poujadej at (Jean-Claude Poujade)
  • Date: Fri, 14 Nov 2003 04:43:14 -0500 (EST)
  • References: <bove46$kr2$>
  • Sender: owner-wri-mathgroup at

Karsten Rothemund <karo at> wrote in message news:<bove46$kr2$1 at>...
> Hello all out there
> I use Mathematica 4.2 under FreeBSD (Linux API) and 4.1 (Linux).
> I want to demonstrate my students something about grad, div and curl.
> So I prepared a notebook on the FreeBSD-machine (Mathematica 4.2),
> which worked there OK. Now I want to re-evaluate the notebook at the
> university (Mathematica 4.1 on Linux) and I get the following:
> -----8<----------8<----------8<----------8<----------8<----------8<-----
> In[1]:= << CalculusVectorAnalysis
>   Cartesian::"shdw": Symbol "Cartesian" appears in multiple contexts \
>     CalculusVectorAnalysis, Global definitions in context \
>     CalculusVectorAnalysis may shadow or be shadowed by other \
>     definitions.
> In[2]:= <<GraphicsPlotField3D
>         <<GraphicsPlotField
>         <<GraphicsContourPlot3D
>         <<GraphicsLegend
> In[3]:= SetCoordinates[Cartesian[x, y, z]]
>   Coordinates::"invalid": Cartesian[x, y, z] is not a valid \
>     coordinate system specification.
> Out[3]:= SetCoordinates[Cartesian[x, y, z]]
> -----8<----------8<----------8<----------8<----------8<----------8<-----
> At this point I can stop evaluating the notebook. :-(
> But what is the problem here? Is there a significant difference
> between 4.1 and 4.2? A Bug? 
> Does a workaround exist? (I don't want to update/downgrade to have
> both machines at a consistent level)
> I couldn't find anything with google (but maybe I didn't look at the
> right places -> pointer to them might be enough).
> Thanx for any help,

It seems that grave accents (ascii code 96) are missing here and there:
Out[1]=4.1 for Microsoft Windows (November 2, 2000)
In[7]:=SetCoordinates[Cartesian[x, y, z]]

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