Re: matrix
- To: mathgroup at smc.vnet.net
- Subject: [mg28394] Re: matrix
- From: "Carl K. Woll" <carlw at u.washington.edu>
- Date: Mon, 16 Apr 2001 03:28:46 -0400 (EDT)
- Organization: University of Washington
- References: <9bb759$92p@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Win, How about mat=Table[0,{4000},{1220}]; mat[[{216,217,218,219,220},All]]=1; mat or mat=PadRight[Table[1,{5,1220}],{4000,1220},0,{215,0}] Carl Woll Physics Dept U of Washington "Su Su Win" <susuwin at post.kek.jp> wrote in message news:9bb759$92p at smc.vnet.net... > Hello, > > How can I make a matrix (4000x1220) with zeros except that all the values at > 216th to 220th rows are ones. > Thank you very much in advance. > Regards, Win > > > >