Re: Matrix question

*To*: mathgroup at smc.vnet.net*Subject*: [mg60299] Re: [mg60287] Matrix question*From*: "Ingolf Dahl" <ingolf.dahl at telia.com>*Date*: Sat, 10 Sep 2005 22:36:17 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

If n is size of matrix and 100p is the percentage, try n = 10; p = 0.1; Table[UnitStep[Random[] - (1 - p)], {n}, {n}] Best regards Ingolf Dahl > -----Original Message----- > From: sandog [mailto:sandog at mail.gr] To: mathgroup at smc.vnet.net > Sent: den 10 september 2005 12:47 > Subject: [mg60299] [mg60287] Matrix question > > i want to create a NxN matrix with zeros but i want a > percentage of the matrix spots to be one at random spots any > idea? cause i have no clue how to do that. > Any help appreciated thx . > >