Re: Export Complex Matrices
- To: mathgroup at smc.vnet.net
- Subject: [mg40747] Re: Export Complex Matrices
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Wed, 16 Apr 2003 01:35:01 -0400 (EDT)
- Organization: Universitaet Leipzig
- References: <b7ge8q$djp$1@smc.vnet.net>
- Reply-to: kuska at informatik.uni-leipzig.de
- Sender: owner-wri-mathgroup at wolfram.com
Hi, I don't know for what system you have to export the data. If you just want to save it and reread it in Mathematica Put[COO,"data.m"] and COO=Get["data.m"] may be a good solution. The CSV format may also help you Export["COO.dat", COO, "CSV"]; !! COO.dat gives 2,3,2.E-9 3,2,2.*^-9*I Regards Jens Kyriakos Chourdakis wrote: > > Dear all, > > I am trying to export matrices of the form > > COO = {{2, 3, 2. 10^-9}, {3, 2, 2. 10^-9 I}} > > with I the imaginary unit. It is the coordinate > representation of large sparse matrices. The first two > columns are the coordinates, and the third is the > value. When I use the simple > > Export["COO.dat",COO] > > I guess Mathematica recognises the imaginary part as string, > and exports > > 2 3 2.e-9 > -9 > 3 2 2. 10 I > > instead of > > 2 3 2.e-9 > 3 2 2.e-9 I > > I am sure there is a simple way to get around the > problem, but I can't find it.. > > I am using Mathematica 4.0 on Windows Me. > > Best > > K. > > __________________________________________________ > Yahoo! Plus > For a better Internet experience > http://www.yahoo.co.uk/btoffer