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?