Re: Changing names of variables in a loop
- To: mathgroup at smc.vnet.net
- Subject: [mg92194] Re: Changing names of variables in a loop
- From: dh <dh at metrohm.ch>
- Date: Mon, 22 Sep 2008 07:24:02 -0400 (EDT)
- References: <gb7obt$ngj$1@smc.vnet.net>
Hi Kazik, obviously your ai is a function of i. Therefore, simply define this function: ai[1]=1; ai[2]=2; ai[3]=3; For[i = 1, i <= 3, i += 1, Summa += func[ai[i]]] you could do something similar with an array. This is less flexible but faster. hope this helps, Daniel kazik.lakomy at gmail.com wrote: > Hi, > do you know maybe is there a possibility to change a name of a > variable in a loop? I'm not exactly sure how to explain it, so maybe > instead of my words I paste a basic example that express my query: > > a1 = 1; a2 = 2; a3 = 3; > func[g_] := g; > Summ = 0; > > For[i = 1, i <= 3, i += 1, > Summa += func[ai]] > > So something like this... I have tried to deal with this like with > strings and have put func[a<>"i"] but it didn't work (quite logic). > The general problem is much more complicated, this is only a part of > it, so please do not suggest me how can I sum up three numbers, this I > believe I know :) I would very appreciate any hints, > Best regards, > Kazik > -- Daniel Huber Metrohm Ltd. Oberdorfstr. 68 CH-9100 Herisau Tel. +41 71 353 8585, Fax +41 71 353 8907 E-Mail:<mailto:dh at metrohm.com> Internet:<http://www.metrohm.com>