Re: mathematica newbie ?

*To*: mathgroup at smc.vnet.net*Subject*: [mg92439] Re: [mg92376] mathematica newbie ?*From*: Murray Eisenberg <murray at math.umass.edu>*Date*: Tue, 30 Sep 2008 21:53:10 -0400 (EDT)*Organization*: Mathematics & Statistics, Univ. of Mass./Amherst*References*: <200809301133.HAA21913@smc.vnet.net>*Reply-to*: murray at math.umass.edu

To begin, I hardly thing there's any difficulty whatsoever in the stated case where nsupports=3, since you have then a list of just 3 elements. so let's try something a little more ambitious, where there are, say 6 elements: nsupports = 6; ndof = 10; nels = 2; Next, define a function v having two special rules and one general rule: v[0] = 0; v[nsupports - 1] = ndof - 2; v[x_] := 2 x nels Finally, form the column vector you want: col = Table[{v[x]}, {x, 0, nsupports - 1}] {{0},{4},{8},{12},{16},{8}} The result is, in effect, a column vector -- although it's really just a list of 6 one-element lists. If you want to display it as a column vector, do this: col // MatrixForm Jared.webb at yahoo.com wrote: > I am extremely new to mathematica and am having trouble following the > documentation. > > I would like to set up the following loop and have it send the output > to a vector. > > If I have in mathematica: > > nsupports=3 > ndof=10 > nels=2 > int=range[0,nsupports-1] - this is my iterator > > I want to set up a loop: > > for x in int: > if x=0, return 0 > if x=nsupports-1, return ndof-2 > otherwise, return x*nels*2 > > I want the output to go to a column vector. > > Thanks > Jared > -- Murray Eisenberg murray at math.umass.edu Mathematics & Statistics Dept. Lederle Graduate Research Tower phone 413 549-1020 (H) University of Massachusetts 413 545-2859 (W) 710 North Pleasant Street fax 413 545-1801 Amherst, MA 01003-9305

**References**:**mathematica newbie ?***From:*Jared.webb@yahoo.com