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MathGroup Archive 2001

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Re: Queries: notebook, matrices

  • To: mathgroup at smc.vnet.net
  • Subject: [mg26992] Re: Queries: notebook, matrices
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Tue, 30 Jan 2001 23:22:14 -0500 (EST)
  • Organization: Universitaet Leipzig
  • References: <9562tq$6q@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

1)

"DumpSave["file.mx", symbol] writes definitions associated with a symbol
to 
a file in internal Mathematica format. DumpSave["file.mx", "context`"] 
writes out definitions associated with all symbols in the specified
context. 
DumpSave["file.mx", {object1, object2, ... }] writes out definitions for 
several symbols or contexts. DumpSave["package`", objects] chooses the
name 
of the output file based on the computer system used. DumpSave["file"] 
saves all definitions in the current session"

and say

DumpSave["thatsAllforToday.mx"]

and at the next morning say

Get["thatsAllforToday.mx"]

and continue.

2) Set:

$Post = If[MatrixQ[#], MatrixForm[#], #]  &

or use TraditionalForm[] as default Output format.

3) MathLink for Excel ??

http://www.wolfram.com/products/applications/excel_link/


The FAQ is at

http://support.wolfram.com/

Regards
  Jens

"M. Damerell" wrote:
> 
> Sorry if these are answered in a FAQ file, I could not
> find any FAq file for this group. Math. 4.0,  windows95.
> 
> 1. I do a lot of calculation in a notebook, save it,
> then when I restart Math & open the file I have to
> recalculate each item before I can resume where I
> left off.  Is there any way to tell Math to recalculate
> everything when the file is reopened?
> 
> 2. I enter a matrix as (say)  A={{1,2,3},{4,5,6} etc
> and it displays in that form. Is there any way to make
> Math display matrices as matrices? I know you can do
> 
> B=A.A//MatrixForm
> 
> this looks right but Math doesnt know this is a matrix.
> So I would like matrices to be held internally in list
> form but displayed in matrix form.
> 
> 3. and finally, is there any way to export the matrix
> into  Excel?


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