Re: RE: Joining lists
- To: mathgroup at smc.vnet.net
- Subject: [mg37861] Re: [mg37824] RE: [mg37810] Joining lists
- From: Tomas Garza <tgarza01 at prodigy.net.mx>
- Date: Fri, 15 Nov 2002 01:36:19 -0500 (EST)
- References: <200211141111.GAA11381@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Your Do loop does what it is instructed to do. It calculates the pair {a[[i]],b[[i]]} in turn, **but does nothing else** i.e., the result is just lost somewhere inside your computer. If you set Do[s = {{etc...}}], then calling s will give the last result stored in s, i.e., {a[[3]],b[[3]]}. Using Transpose is by far the proper way to do what you want. Tomas Garza Mexico City ----- Original Message ----- From: "Pigeon, Robert" <Robert.Pigeon at drdc-rddc.gc.ca> To: mathgroup at smc.vnet.net Subject: [mg37861] [mg37824] RE: [mg37810] Joining lists > Sorry... I just cut and paste from a Notebook! > > Here what I am trying to do: > a={1,2,3}; > b={4,5,6}; > c={{a[[1]],b[[1]]},{a[[2]],b[[2]]},{a[[3]],b[[3]]}} > {{1,4},{2,5},{3,6}} > > I tried: Do[{{a[[i]],b[[i]]}},{i,3}] And it is not working. > > Since my first posting I found that Transpose[{a,b}] will do it. > > But I would like to know why the Do loop is not doing it ! > > Thanks, > > Robert > > -----Original Message----- > From: Pigeon, Robert [mailto:Robert.Pigeon at drdc-rddc.gc.ca] To: mathgroup at smc.vnet.net > To: mathgroup at smc.vnet.net > Subject: [mg37861] [mg37824] [mg37810] Joining lists > > > Good day, > Here what I am trying to do: > <<...OLE_Obj...>> > <<...OLE_Obj...>> > <<...OLE_Obj...>> > <<...OLE_Obj...>> > Of course my two lists are a lot larger ! So, I would like to build the new > list c automatically, from the first item to the last of my lists (number of > items is equal in both lists). I tried: > <<...OLE_Obj...>> > <<...OLE_Obj...>> > and other things. But it does not work. > > At the end I want to plot (ListPlot) the new list. > > Any suggestion? > > Thanks > > > Robert Pigeon > > >
- References:
- RE: Joining lists
- From: "Pigeon, Robert" <Robert.Pigeon@drdc-rddc.gc.ca>
- RE: Joining lists