Re: problem with Part function

*To*: mathgroup at smc.vnet.net*Subject*: [mg18208] Re: problem with Part function*From*: "Neal E. Tornberg" <neal.e.tornberg at boeing.com>*Date*: Tue, 22 Jun 1999 20:41:07 -0400*Organization*: Boeing*References*: <7kho9q$qop@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

You need a sequence for your Part function Try mat[[##&@@xy]]=1 ## is SlotSequence[1] & turns it into a pure function @@ applies it to the list xy Casubolo Dario wrote: > > Just a little problem: > I've a matrix of zeros, say: > mat=Table[Table[0,{5}],{5}]; > then, I've a point in xy axys, > xy={3,3}; > now, I want the position {3,3} of matrix becomes 1; > if I write > mat[[xy]]=1; or mat[[{3,3}]]=1; it doesn't work; only mat[[3,3]]=1 > works, but I don't want rewrite all. > I think I've to use something like Map, Thread, Apply or so, but I don't > know what and how exactely; > please, someone help me. > THANK YOU > > Dario Casubolo > email: bubbola at workline.it -- Neal E. Tornberg neal.e.tornberg at boeing.com Nobody here thinks I speak for Boeing. You shouldn't either.