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MathGroup Archive 2003

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Re: Matrix sizing in 2 dimensional input

  • To: mathgroup at smc.vnet.net
  • Subject: [mg39452] Re: Matrix sizing in 2 dimensional input
  • From: "Allan Hayes" <hay at haystack.demon.co.uk>
  • Date: Sun, 16 Feb 2003 06:13:53 -0500 (EST)
  • References: <b2knbm$1g5$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

"Friedrich Laher" <mathefritz at schmieder-laher.de> wrote in message
news:b2knbm$1g5$1 at smc.vnet.net...
> is there no way to add/delete rows / collumns while entering data into a
> 2 dimensional matrix ( -"template" ) ?
>
> The provided palletes only allow removing a column, removing a row does
> not make a row vector of it.
>

Friedrich,

I recommend using the keys instead of the palette, see
menu>Edit>ExpressionInput:

Click to the left(right) of an entry; then Control+ "," add a column to the
left (right)

Click to the left of the first entry in a row; then Control+ "Return
(Enter)" adds a row above
Click anywhere else in a row; then Control+ "Return (Enter)" adds a row
below

Cutting copying and pasting work well, some experimentation is needed, but
here are some points:

Only runs of complete rows (columns) can be cut.
An existing submatrix can be pasted over with a copy of one of the same size
( so, for example, to insert a row or column we have to create a new empty
one as above).

--
Allan

---------------------
Allan Hayes
Mathematica Training and Consulting
Leicester UK
hay at haystack.demon.co.uk
Voice: +44 (0)116 271 4198
Fax: +44 (0)870 164 0565




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