Re: Need help with Mathematica

*To*: mathgroup at smc.vnet.net*Subject*: [mg115909] Re: Need help with Mathematica*From*: Gabriel Landi <gtlandi at gmail.com>*Date*: Tue, 25 Jan 2011 06:30:17 -0500 (EST)

Here is how I would do it. I prefer the Do function instead of the For but both would work. Do[ Import["P" <> ToString[i] <> ".txt", "Table"]; Perform your calculations. Generate Q_DATA, R_DATA, S_DATA; Export["Q <> ToString[i] <> ".txt", Q_DATA]; Export["R <> ToString[i] <> ".txt", R_DATA]; Export["S <> ToString[i] <> ".txt", S_DATA], {i, 1, N} ] The "<>" guy joins strings and since i is a number, ToString[i] needs to be used to convert it to a string. You can also use FileNames[] function to get the files you want. First use SetDirectory["C:\\blablabla\blablabla"] and then FileNames will list all files in that directory. Hope it helps, Gabriel On Tue, Jan 25, 2011 at 7:21 AM, Martin Vavpoti=C4=8D <martin.vavpotic at gmail.com>wrote: > Hello to everyone. > > I am in dire need of some assistance with Mathematica. First of all, I > need to know how to write a for loop that would create a series of > output files numbered according to the index of the said loop. For > instance, I want to feed Mathematica with a series of input files > named P1.txt, P2.txt, etc. The equation I'm working on outputs three > files: Q1.txt, R1.txt, S1.txt for the first input. I want the loop to > tell my program how to name my files. > > I know how to do this in another system, but I'm rather new with > Mathematica. > I've been trying to find a solution for days but apparently the > difference between both programs is enough for me not to find it. > > Any help would be greatly appreciated. > >