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MathGroup Archive 2000

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Bug in TableDirections

  • To: mathgroup at
  • Subject: [mg23729] Bug in TableDirections
  • From: "Drago Ganic" <drago.ganic at>
  • Date: Mon, 5 Jun 2000 01:09:21 -0400 (EDT)
  • Organization: HiNet
  • Sender: owner-wri-mathgroup at

Hi MathGroup !!

I believe there is a Bug in the TableForm/MatrixForm when using the option TableDirections.

In the Mathematica Book section 2.8.8. we have the example 

TableForm[ { {a, a, a},  {b, b} } ]

which is essentially the same as 

TableForm[ {{a, a, a}, {b, b} }, TableDirections -> Column ]

The result is 

a    a    a
b    b

which is fine. But when I write 

TableForm[ {{a, a, a}, {b, b} }, TableDirections -> Row ]

I don't get the output I expected

a    b
a    b

Instead I get the same output as before

with the following error massage

Thread::"tdlen": "Objects of unequal length in OutputFormsDump`HoldList[OutputFormsDump`HoldList [a, a, a], <<1>>] cannot be combined." 

Any comments ?!?

Drago Ganic

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