Re: Queries: notebook, matrices

*To*: mathgroup at smc.vnet.net*Subject*: [mg26991] Re: [mg26975] Queries: notebook, matrices*From*: maarten.vanderburgt at icos.be*Date*: Tue, 30 Jan 2001 23:22:14 -0500 (EST)*Sender*: owner-wri-mathgroup at wolfram.com

Hi, 1. you can speed this up if you select all cells by Ctrl+A and then execute everything by Shift+Enter 2. do (B = A.A)//MatrixForm, then B is again a matrix 3. Look in the help for Export [ ]. You can export the matrix as a list or a table, which you can import in Exell. I believe in Mathematica 4.1 the Export and Import functions support more types of import/export. Maarten van der Burgt Icos Vision Systems Leuven, Belgium "M. Damerell" <uhah208 at rhbnc.ac.uk> on 30-01-2001 09:38:24 AM cc: Subject: [mg26991] [mg26975] Queries: notebook, matrices 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?