How to Write a 6 summation equation that accesses a data file
- To: mathgroup at smc.vnet.net
- Subject: [mg38692] How to Write a 6 summation equation that accesses a data file
- From: benn686 at hotmail.com (Ben Nguyen)
- Date: Sun, 5 Jan 2003 06:34:01 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Hi everyone, Im hoping someone could be of some help to me... I have a binary file containing a 3 dimensional array (time, vertical, horizontal). I would like to perform some noise statistics on it but Im not very proficient at mathematica. The equation that I would like to run it through has a total of 6 summations. 3 of these summations use the time (t), vertical (v) and horizontal (h) as the index and are performed inside 3 other summations (indexes, t', v', h'). Looks something like: E E E (E E E U(t,v,h) * f(n) )^2 where U(t,v,h) is my 3d array, and f(n) is an exponential function dependent upon t,v,h,t',v', and h' I uploaded the equations here: http://www.photoasa.com/cgi-bin/anlogin.fcg?u=photomat&p=summ If anyone could point me in the direction on how I would enter this in Mathematica syntax I would be eternally grateful! Ben