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Re: Mathematica 6

  • To: mathgroup at
  • Subject: [mg80343] Re: [mg80311] Mathematica 6
  • From: Curtis Osterhoudt <cfo at>
  • Date: Sat, 18 Aug 2007 05:34:18 -0400 (EDT)
  • Organization: LANL
  • References: <>
  • Reply-to: cfo at

On Thursday 16 August 2007 23:50:10 John wrote:
> Just installed Mathematica 6. It opens with a blank page called
> Untitled 1, but I can't get it to do anything.
> I typed in the following:
>  Mean{{1,2,3}], Variance[{1,2,3}]
> and a few other simple calculations, but nothing happens.
> John

   Just a few quick checks (perhaps silly, but sillier things have been known 
to trip up computer users):
     * Though your Variance input is syntactically correct, the Mean input 
needs to read Mean[{1,2,3}], with a square bracket instead of a curly 
bracket. Mathematica returns no explicit error on my machine with the wrong 
input, but does flag the cell with an orange cell marker, indicating an 
error. Have you tried something as simple as 2-2 (on its own line)?

     * Are you pressing the Shift-Enter key combination to evaluate your 
inputs (while the cursor is anywhere on the line where you input your 
expressions)? Alternatively, if you have a numeric keypad, the Enter key 
there (no Shift) should work.

    * If you use Linux, do you also use the Beryl or Compiz compositing 
software? If so, sometimes Mathematica interacts strangely with it. In the 
strange cases, you can see some input and output, but not other input or 
output. If that's the case, either disable Beryl/Compiz or 
export "XLIB_SKIP_ARGB_VISUALS=1" before you run Mathematica.

Curtis Osterhoudt
cfo at
PGP Key ID: 0x4DCA2A10
Please avoid sending me Word or PowerPoint attachments

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