On Wed, Aug 31, 2011 at 1:09 PM, Istvan Kadar <[email protected]> wrote: > Hello, Markus > > Thank your help. > I am sorry the sign's error. > > The corrected verb: > vx=:crossproduct=:1|.([*1|.])-]*1|.[ > 3 8 2 vx 6 4 5 > 32 _3 _36 > the sign check: > 0 0 1 -: 1 0 0 vx 0 1 0 > 1
Seems right now. Here's the implementation I like to use: crossproduct=: [:-/ .*(=i.3),"1 2,: Ambrus ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
